Download ppt on data handling for class 7

Week 7: Debugging and Error Handling Debugging methods available in the ID Error-handling techniques available in C#

7: Debugging and Error Handling Slide 13 Immediate and CommandWindows Windows Programming 1 Chapter 7: Debugging and Error Handling Slide 14 Error-handling techniques available in C# Week 7: Debugging and Error Handling/return value if necessary For uses call elsewhere in program Pass parameters if needed All methods must be defined inside of a class Slide 43 Method /data Widening Make an object that of a derived class and more complex Narrowing Make an object that of a base class and cause some data/


ISBN 0-321-49362-1 Chapter 1 Preliminaries. Copyright © 2007 Addison-Wesley. All rights reserved.1-2 Chapter 1 Topics Reasons for Studying Concepts of.

in a structure called a classClasses are the basis for data abstraction –Classes are structures that include both local data and functionality Copyright © 2007 /. All rights reserved.1-86 Ada Evaluation Contributions –Packages - support for data abstraction –Exception handling - elaborate –Generic program units –Concurrency - through the tasking model //, ABS, SQRT, REMAINDER, MIN, MAX e.g., (+ 5 2) yields 7 QUOTE - takes one parameter; returns the parameter without evaluation –QUOTE is required because /


STROUD Worked examples and exercises are in the text Programme 28: Data handling and statistics DATA HANDLING AND STATISTICS PROGRAMME 28.

examples and exercises are in the text Programme 28: Data handling and statistics Arrangement of data Class boundaries A class or group boundary lies midway between the data values. For example, for data in the class or group labelled: 7.1 – 7.3 (a)The class values 7. 1 and 7.3 are the lower and upper limits of the class and their difference gives the class width. (b)The class boundaries are 0.05 below the lower/


PHP Exception Handling How to handle and create user-defined exceptions Mario Peshev Technical Trainer Software University

inbuilt engine for handling errors and warnings and turning them in exceptions Exception  PHP incorporates the Exception class to handle exceptions PHP Exceptions/ found something that might be an error or might not; Level Examples 7  E_STRICT (level 2048) – Run-time notices. PHP suggest changes to/code > 1000 && $code 1000 && $code < 1003) echo "Please fill in all the data"; echo "Please fill in all the data"; elseif ($code == 1004) elseif ($code == 1004) echo "Database error or unescaped symbols!";/


Exception Handling 11. © Aptech Ltd. Objectives 2Building Applications Using C# / Session 11  Define and describe exceptions  Explain the process of.

exception classes that C# provides the type of exception to be handled depends on the specified exception class.  The following table lists some of the commonly used exception classes: ExceptionsDescriptions System.ArithmeticException This exception is thrown for / © Aptech Ltd. Performance 4-7 37Building Applications Using C# / Session 11  In the code:  Two classes, NumberDoer and NumberTeste r, are defined. In the NumberTester class, if the value entered is not of int data type, an exception is thrown. /


Lesson 4 Programming Techniques Exception Handling /EH/ AUBG ICoSCIS Team Assoc. Prof. Stoyan Bonev March, 23 - 24, 2013 SWU, Blagoevgrad.

handling. §Exception is raised when the associated event occurs. 7/println("Divisor cannot be zero "); §Run program with regular data and wrong data 17 EH – Practice in Java // file quotient3_WithExplicitThrownException.java/for short. For example, the following command enables assertions in package package1 and disables assertions in class Class1. java –ea:package1 –da:Class1 AssertionDemo 85 Using Exception Handling or Assertions Assertion should not be used to replace exception handling. Exception handling/


Module 5: Programming with C#. Overview Using Arrays Using Collections Using Interfaces Using Exception Handling Using Delegates and Events.

7, 6, 5, 4, 3, 2, 1, 0}; numbers[4] = 5; string[] animal = {"Mouse", "Cat", "Lion"}; animal[1]= "Elephant"; string someAnimal = animal[2]; string[] animal = {"Mouse", "Cat", "Lion"}; animal[1]= "Elephant"; string someAnimal = animal[2]; How to Iterate Through an Array Using the foreach Statement Using foreach statement repeats the embedded statement(s) for/manage data in an application How to Use the ArrayList Class ArrayList /Collections Using Interfaces Using Exception Handling Using Delegates and Events /


CS 61B Data Structures and Programming Methodology July 7, 2008 David Sun.

normal way. The method throws an object that encapsulates the error. The method exits immediately, no value is returned. The exception handling mechanism looks for an exception handler that can deal with the error condition. Exceptions Exceptions are objects. All exceptions extend from the Throwable class. Pre-declared Subtypes Error : – Internal errors and resource exhaustion inside the runtime environment – Usually unrecoverable. Exception : – Intended/


Chapter 7. Detailed Design 홍 원 의홍 원 의. Contents What is Detailed Design Data Structure Associations Operations Visibility Algorithm Exceptions.

7. Detailed Design 홍 원 의홍 원 의 Contents What is Detailed Design Data /class testAssoc { T myT;// appropriate only for 1 to 1 composisiton T* myT2;// ok for 1 to 1 or 1 to (0,1) association or composition T& myT3;// ok for 1 to 1 association or composition } composition association may be use inline class declaration : inappropriate for/operations that throw exceptions, nor should the constructors of exception class throw exceptions Exception handling applies to operations and is a complicating factor in the/


ALICE FMD Calibration Considerations 1 Overview ● The FMD ● FMD Calibration classes ● AliFMDParameters ● DCS `Conditions DB ● Calibration Procedures ●

read out – the number of strips read out can be varied. ● Zero suppression – ALTRO can zero suppress data, need to know this to read raw data. ● Pedestals – the pedestals subtracted in FEE ● Pulser value – for gain calibration LDC Calibration Procedures: Pedestals 7 DCS DB Pedesta l run Data CDB PedestalFinder > FEE DCS: Start pedesta l calib Possible offline `fixes `Conditions Maps Calibrations Procedures: Gain & Threshold/


Slide 3Slide 3-Introduction Slide 4Slide 4-Home Page Slide 5Slide 5-Adding New Group Slide 6 - 7Slide 6 - 7-Naming of groups and settings Slide 8 - 9Slide.

7-Naming of groups and settings Slide 8 - 9Slide 8 - 9-Browsing and Importing Data Slide 10Slide 10-Exporting Database Slide 11Slide 11-Adding Individual Data/ b. Choose rows and columns (Recommended settings). c. CSS Class stays on normal. d. Your Width must be on 680 /messages. 4.Unsubscribe Message: This must always be selected. 5.Image Handling: Stays as indicated on the example. SEND TO 1.Tab stays/ When sending your SMS, or requesting that we send it for you, please keep the following in mind: An sms is/


Liang, Introduction to Java Programming, Ninth Edition, (c) 2013 Pearson Education, Inc. All rights reserved. 1 Chapter 14 Exception Handling and Text.

handling (§14.4.5). F To use the finally clause in a try-catch block (§14.5). F To use exceptions only for unexpected errors (§14.6). F To rethrow exceptions in a catch block (§14.7). F To create chained exceptions (§14.8). F To define custom exception classes/Ninth Edition, (c) 2013 Pearson Education, Inc. All rights reserved. 58 Reading Data from the Web Just like you can read data from a file on your computer, you can read data from a file on the Web. Liang, Introduction to Java Programming, Ninth Edition/


1 Harvard Medical SchoolMassachusetts Institute of Technology Inferring Nonstationary Gene Networks from Temporal Gene Expression Data Hsun-Hsien Chang.

For a variable at a time T+1, search which set of variables at time T has the highest likelihood of modulating its value at T+1. Step-wise search algorithm. Clinical variable Genes 7/microarrays: –Does not require densely sampled microarray data. –Able to handle noise and handle biological variability. –Temporal dependency is captured by/2 22 Harvard Medical SchoolMassachusetts Institute of Technology major histocompatibility complex, class ii, dr beta 1otoferlin tumor necrosis factor, alpha-induced protein /


Midterm 26 March 2015 (4:30-5:30 pm) – Rm5620 Closed book exam MC Questions only x25 Up to L(7) Methods Scope: video lectures (+Lab), forum discussions,

<= 8 Do While i <= 8 i += 4 i += 4 If i 6 Then Sub2() If i 6 Then Sub2() If i <= 7 Then Sub3() If i <= 7 Then Sub3() Loop Loop End Sub Public Sub Sub2() Debug.Print("IS") Debug.Print("IS") End Sub Public Sub Sub3() Debug.Print("3230") Debug./Load Handles MyBase.Load Sub1() Sub1() End Sub RAM i 04 "IS" "3230" 8 "IS" 12 "IS" IS 3230 IS Data Type Option Strict ON Public Class Form1 Public Function MyFun() As _____(a)_________ Dim s As String = "0." Dim s As String = "0." For i As Integer = 3 To 1 Step -1 For i/


Pattern-Oriented Software Architectures Patterns & Frameworks for Concurrent & Networked Software Dr. Douglas C. Schmidt

CT, CR, Ultrasound, etc. 9. Return Ref 7.New 1. Deploy 3. Bind Factory Image Xfer /classes 119 Iterative vs. Concurrent Servers Iterative/reactive servers handle each client request in its entirety before servicing subsequent requests Best suited for short-duration or infrequent services Concurrent servers handle multiple requests from clients simultaneously Best suited for I/O-bound services or long-duration services Also good for/ endpoint with a data-mode socket handle & passes the handle as the return /


1 -Storyboard - TWS for z/OS 8.5.0 Conditional logic IBM Tivoli Software Rossella Donadeo.

and print options 5 FEEDBACK - Feedback options 6 TIME - Time specifications 7 OP INSTRUCTIONS - Operator instructions 8 JCL BROWSE - JCL browse 9 CLEANUP OPTIONS/cmd ws no. time (for ext pred only) GENN 099 ******************************* Bottom of data ******************************** 35 Scenario 1 – Handle Conditions in database The /Operation is restartable REROUTEABLE ===> _ Operation is eligible for reroute Print options: FORM NUMBER ===> ________ SYSOUT CLASS ===> _ 41 Scenario 2 – Define an operation/


1 Handling Exceptions COSC 1567 C++ Programming Lecture 11.

one throw 12 Throwing Exceptions When you use the version of the dataEntry() function shown in Figure 12-7, if the user enters a value between 0 and 12 inclusive, the actual value is returned to /class can catch the thrown Employee object and handle it appropriately for the application 27 The Employee Class 28 Throwing Standard Class Objects A few possibilities include: –A program might assign default values to any Employee whose data entry resulted in an exception –A program that tests the accuracy of data/


EE2E1. JAVA Programming Lecture 7 Files and Streams.

from the abstract Reader and Writer classes) for handling text i/o Java has a number of classes (descended from the abstract Reader and Writer classes) for handling text i/o Outputting to a text file This can easily be done with the PrintStream class This can easily be done with the PrintStream class Both text and numeric data can be output using the print() and println() methods Both text/


Copyright © 2014 by John Wiley & Sons. All rights reserved.1 Chapter 11 – Input/Output and Exception Handling.

in.next(); String input = in.nextLine(); Copyright © 2014 by John Wiley & Sons. All rights reserved.37 Self Check 11.7 Answer: Because 995.0 is not an integer, the call in.hasNextInt() returns false, and the call in.nextInt() is skipped/to implement a BadDataException. Which exception class should you extend? Copyright © 2014 by John Wiley & Sons. All rights reserved.82 Application: Handling Input Errors  Program asks user for name of file File expected to contain data values First line of file contains /


Copyright © 2014 by John Wiley & Sons. All rights reserved.1 Chapter 11 – Input/Output and Exception Handling.

parent directories do not exist. Copyright © 2014 by John Wiley & Sons. All rights reserved.7 7 Problem: Explore File Properties Objective: Write a program that demonstrates how to create files in a platform-independent way and /can be retrieved Using the getMessage method of the Throwable class. Copyright © 2014 by John Wiley & Sons. All rights reserved.71 Application: Handling Input Errors  Program asks user for name of file File expected to contain data values First line of file contains total number of values /


Exception Handling 1 -Based on slides from Deitel & Associates, Inc. - Revised by T. A. Yang.

7 8 Questions regarding exception handling in the sample application: Q1: Which method in which class would throw the IllegalArgumentException? Q2: Under what condition would the exception be thrown? Q3: How would the client catch the exception when it is thrown? 9 Method setTime() and Exception Handling For/resource leak is a memory leak. – Malicious programs may perform memory scanning to retrieve sensitive data that are not protected in the computer’s memory. – Java automatically garbage collects memory /


12-2 Chapter Topics Chapter 12 discusses the following main topics: Part I: Exceptions Handling Exceptions Throwing Exceptions Part II: More about Input/Output.

handling. The default exception handler deals with unhandled exceptions. The default exception handler prints an error message and crashes the program. 12-7 Exception Classes An exception is an object. Exception objects are created from classes in the Java API hierarchy of exception classes. All of the exception classes/RandomAccessFile class has: the same methods as the DataOutputStream class for writing data, and the same methods as the DataInputStream class for reading data. The RandomAccessFile class can/


Data Mining Demystified John Aleshunas Fall Faculty Institute October 2006.

-3Class-2 Class-3 Class-2 Class-3 Class-2Class-3 Class-2 Class-3Class-2 Class-3 Class-2Class-3 Class-1 Class-3 Class-2Class-3 Class-2Class-1 Class-3 Class-2Class-3 Class-1 Class-2Class-1 Class-3 Class-1 Class-2 Class-1 Wine Data Self-Organizing Map Example Healthy SickHealthy SickHealthySickHealthy SickHealthy Sick HealthySick HealthySickHealthy Sick Healthy Sick Healthy Sick HealthySickHealthySick Healthy SickHealthySick HealthySick Diabetes Data Source: McKee NFL Quarterback Analysis Data from 2005 for 42/


 2002 Prentice Hall. All rights reserved. 1 Chapter 17 – Files and Streams Outline 17.1 Introduction 17.2 Data Hierarchy 17.3 Files and Streams 17.4 Classes.

call to search files in subdirectory 173 foreach ( string myDirectory in directoryList ) 174 SearchDirectory( myDirectory ); 175 } 176 177 // handle exception if files have unauthorized access 178 catch( UnauthorizedAccessException ) 179 { 180 MessageBox.Show( "Some files may not be visible" +/ rd.cs 1 // Fig. 17.14: RandomAccessRecord.cs 2 // Data-record class for random-access applications. 3 4 using System; 5 6 public class RandomAccessRecord 7 { 8 // length of firstName and lastName 9 private const int /


Lilian Blot LINEAR DATA STRUCTURE LINKED LIST Abstract Data Structure Autumn 2014 TPOP 1.

Data Structure Autumn 2014 TPOP 1 Lilian Blot Today’s Learning Outcomes APIs: The Library Project Linear ADTs From Theory (Will) to Programming (Lilian)  Procedural Approach Implementing ADTs  Queues using Linked Lists Inner Classes  A class declaration inside a class declaration Autumn 2014 TPOP 2 Lilian Blot APIs In computer programming, an Application Programming Interface (API) is a set of routines, protocols, and tools for/


Dynamic Web Pages with ASP.NET Prof. Dr. Hanspeter Mössenböck Institute for System Software Johannes Kepler University Linz © University of Linz, Institute.

2000) 7 What Happens Behind the Scene? client (browser) server (IIS) request ("Counter.aspx") ASP.NET.NET framework response (*.html) *.html page class preprocessor, compiler/ IsPostBack ASP.NET Simple Dynamic Web Pages Web Forms Event Handling Web Controls Validators User Controls Custom Controls State Management Configuration of/classes Can be specified in web.config Providers for MS Access and MS SQL Server are available by default Standard provider is MS Access Writes to the file ApplicationDir/DATA/


1 More on Threads b b A section of code executed independently of other threads written within a single program. b b Java threads can access global data;

data; local variables are private to each thread. b b Multithreading: Concurrency. 2 Implementing Threads i) The interface Runnable specifies an abstract method run() which typically will be overridden in a class/handling is a recovery mechanism (recovery from malfunctioning) 7 Exception Handling  Java has a class called Exception. b Exception subclasses can be derived from this class/) stream sockets (for a process to establish a connection to another process - using TCP)stream sockets (for a process to /


Abstract Data Types. Typical operations on data  Add data to a data collection  Remove data from a data collection  Ask questions about the data in.

7 The wall between displayList and the implementation of the ADT list The ADT Sorted List The ADT sorted list  Maintains items in sorted order  Inserts and deletes items by their values, not their positions Implementing ADTs Choosing the data structure to represent the ADT’s data/void removeAll(); } Array-Based implementation. public class ListArrayBased implements ListInterface{ private static final int MAX_LIST/ Exceptions (review) Exception  A mechanism for handling an error during execution  A method /


CS 180 Problem Solving and Object Oriented Programming Fall 2011 Notes for Week 15: Nov 28-Dec 2, 2011 Aditya Mathur Department of Computer Science Purdue.

/ This Week: 11/28-30 1.Exceptions 2.Recursion 3.Dynamic data structures Readings and Exercises for Week 15 Readings: Chapter: 8.4, 12.1, 12.2,/java:8) 11/28/2011 ©Aditya Mathur. CS 180. Fall 2011. Week 15 7 Exception: Example 2 public class ExceptionExampleDiv0{ public static void main(String [] args){ int y=1, z=0; / 180. Fall 2011. Week 15 17 A method…NOT a class…can throw an Exception. Exception: Throwing but not handling later public ExceptionTest() throws Exception{ Scanner s=new Scanner(new/


Developing Device Drivers for the Sensor and Location Platform

is represented by a sensor object. Sensor objects are similar to WPD functional objects Contains sensor properties and data Device Sensor A Sensor B Sensor N … Introduction: Sensor Object Properties Properties are identified by property keys/ an event sink from this sensor OnProcessWpdMessage Process messages not handled by the class extension Summary A sensor device driver for Windows 7 Must use Sensor Driver Class Extension Calls ISensorClassExtension methods Implements a callback object that supports /


Classifying Categorical Data Risi Thonangi M.S. Thesis Presentation Advisor: Dr. Vikram Pudi.

`q’ R Output the class with the highest weight 19 CMAR Disadvantages No proper statistical explanation given for the mathematical formulae that were employed Cannot handle Fully Confident Associations 20 Large Bayes/ACME has three steps: –Mining step –Learning step –Classifying step Use Data Mining principles to mine informative patterns from a dataset and build a /f 5 ), ( i 2 i 3, f 6 ), ( i 1 i 2 i 3, f 7 ) i1i1 i2i2 i3i3 i3i3 i3i3 i2i2 i3i3 { } 79 An Efficient Method to find Non- Closed Constraints /


1 CS2200 Software Development Lectures 28: Exception Handling A. O’Riordan, 2008 (Includes some slides by Lewis/Loftus 2005 and K. Brown 2004-2007)

special values might not always be available ●will the client remember to check for them? 7 Exception Handling I ●Java provides a systematic way of representing, transmitting, capturing and handling well-defined abnormal situations ●when the method detects the abnormal situation, it creates/ exists but program may not be able to find it or the file might not contain the kind of data we expect public class TestData { public static void main (String[] args) throws IOException{ int value =5; FileWriter fw = new/


Exception Handling. Lecture Objectives To learn how to throw exceptions To be able to design your own exception classes To understand the difference between.

Design (Cont’d) Defensive Design. Anticipate potential problems, especially potential input problems. Fixing an Exception. Handle fixable exceptions locally. This is both clearer and more efficient. Library Exception Handling. Many library classes leave exception handling to the application. Truly Exceptional Conditions. Use exceptions to handle truly exceptional conditions, not for expected conditions. Effective Design (Cont’d) Summary of Important Points In Java, when an error occurs/


Abstract Data Types: stepping back from specifics.

Abstract Data Types (ADTs)  An ADT consists of: a set of values, and a set of operations on those values.  Example: rational numbers some values: 15/7, -/ JScrollPane wraps Jlist JFC/Swing lectures S TRATEGY  A layout manager has responsibility for laying out components within a container.  Unlike in NGP, JFC containers do/  Processes & Threads  Containers (graphical)  Components  Layout managers  Event handling  Inner classes JFC/Swing lectures Processes and Threads  What is a process?  What is a/


Chapter 8: Exceptions and I/O Streams Presentation slides for Java Software Solutions Foundations of Program Design Third Edition by John Lewis and William.

exception type  See ProductCodes.java (page 451) ProductCodes.java 7 The finally Clause  A try statement can have an /class is needed for advanced internationalization and error checking The Keyboard Class  The Keyboard class was written by the authors of your textbook to facilitate reading data from standard input  Chapter 5 explored some of the underlying issues  Now we can examine the processing of the Keyboard class further  The Keyboard class: declares a useful standard input stream handles/


Liang, Introduction to Java Programming, Seventh Edition, (c) 2009 Pearson Education, Inc. All rights reserved. 0136012671 1 Chapter 18 Exception Handling.

caught and handled by your program. Liang, Introduction to Java Programming, Seventh Edition, (c) 2009 Pearson Education, Inc. All rights reserved. 0136012671 7 Runtime Exceptions/ declaring, throwing, and catching exceptions by modifying the setRadius method in the Circle class defined in Chapter 6. The new setRadius method throws an exception if radius is//O Handled in Java? A File object encapsulates the properties of a file or a path, but does not contain the methods for reading/writing data from/to/


 2002 Prentice Hall. All rights reserved. 1 Chapter 6 - Procedures Outline 6.1Introduction 6.2 Modules, Classes and Procedures 6.3 Sub Procedures 6.4.

to perform an explicit conversion for all narrowing conversions Class Convert –The methods in class Convert change data types explicitly –Ex., Convert.ToDouble(“4”)  2002 Prentice Hall. All rights reserved. 25 6.7 Option Strict and Data-Type Conversions Fig. 6.9Property/cmdRollDie1_Click 28 29 Private Sub cmdRollDie2_Click(ByVal sender As System.Object, _ 30 ByVal e As System.EventArgs) Handles cmdRollDie2.Click 31 32 picDie2.Image = modDice.GetDieImage(modDice.RollDie(), _ 33 "redDie") 34 End Sub /


© Copyright Eliyahu Brutman Exceptions. © Copyright Eliyahu Brutman Exceptions and Design Patterns - 2 Introduction to Exception Handling Definition:

- 11 Throwing Objects Why throw an object? Additional data encapsulated An object is created upon invoking the throw statement Can be created with additional data, passed to Ctor Object is destroyed after the catch/object for appropriate handling © Copyright Eliyahu Brutman Exceptions and Design Patterns - 18 Exception Hierarchies Class types representing exceptions may be organized into groups or hierarchies Class Excp {} Class stackExcp : public Excp {} Class popOnEmpty : public stackExcp {} Class /


Unit 111 Event-Driven Programming Listener or Event handler Example: Handling Button Events Example: Handling Mouse Events Example: Handling Keyboard Events.

in the interface. Java provides adapter classes for implementing handlers selectively. Most listener interfaces with two or more methods have matching adapter classes. Java provides a collection of abstract event adapter classes. These adapter classes implement listener interfaces with empty, do-nothing methods. To implement a listener class, we extend an adapter class and override only methods needed. Unit 1115 Handling Window Events This example shows how window/


Chapter 2 Data Design and Implementation. Homework You should have already read section 2.2 You should have already read section 2.2 Read Section 2.3.

usable. 5. Identify potential error situations and classify into 1.Those that are handled by throwing an exception 2.Those that are handled by contract 3.Those that are ignored. Designing ADTs 6. Define the needed exception classes. 7. Decide how to structure the data. 8. Decide on a protection level for the identified data. 9. Identify private structures and methods. 10. Implement the ADT. 11. Create/


1 PATTERNS FOR AUTOMATIC INTEGRATION OF THE DOMAIN-DATA LAYERS IN ENTERPRISE-SYSTEMS Mira Balaban Joint work with Lior Limonad Ben Gurion University Beer-Sheva,

(3) 4. Redirect factory methods: for each factoryMethod f in factories(persistentClass) redirectFactoryMethod(proxy); 5. Tag modifications: stereotype(persistentClass, ``abstract); IBM Haifa, Oct 0629 Proxy Data Mapper – Example Applying PDM to the Message class: IBM Haifa, Oct 0630 Problems solved by the Proxy Data Mapper Pattern Persistency of only marked classes Mixture Availability Reference preservation Duplication Consistency Inter layer Object – handled by the proxy Reference Intra/


Rossella Lau Lecture 9, DCO10105, Semester B,2005-6 DCO10105 Object-Oriented Programming and Design  Lecture 9: Application with Exception Handling

classes (Malik’s slide: 16-6) Rossella Lau Lecture 9, DCO10105, Semester B,2005-6 try/catch Block  Statements that may generate an exception are placed in a try block  The try block also contains statements that should not be executed if an exception occurs  The try block is followed by one or more catch blocks (Malik’s slide: 16-7/binding which reduces programming efforts for different data types within the same family  To manage an application better, exception handling should be employed Rossella Lau /


Object-Oriented Programming Reflection (VRH 7. 3

machine (JVM) definition. Runtime environments in diverse hardware. A class library Standard APIs for GUI, data storage, processing, I/O, and networking. C. Varela Why Java? Java has substantial differences with C++ error handling (compiler support for exception handling checks) no pointers (garbage collection) threads are part of the language dynamic class loading and secure sandbox execution for remote code source code and bytecode-level portability C. Varela/


 2002 Prentice Hall. All rights reserved. 1 Chapter 11 – Exception Handling Outline 11.1 Introduction 11.2 Exception Handling Overview 11.3 Example: DivideByZeroException.

of C# exception handling. 3 4 using System; 5 using System.Drawing; 6 using System.Collections; 7 using System.ComponentModel; 8 using System.Windows.Forms; 9 using System.Data; 10 11 // class demonstrates how to handle exceptions from 12 /in try block 100 catch ( Exception error ) 101 { 102 Console.WriteLine( "Message: " + error.Message ); 103 } // message for exception ‘error’ above is output here 104 105 // finally executes because corresponding try executed 106 finally 107 { 108 Console.WriteLine( 109 "/


Exceptions. 2 Objectives Introduce C# exception handling –library exception types –custom exceptions Describe keywords used for exception handling –try.

n / d; } user code 7 Catching exceptions User code can handle exception –regular code placed in try block –handler code put inside catch clause void Process() { try { int[] data = new int[10]; data[10] = 17;... } catch (/catch (IOException e) {... } derived FileNotFoundException IOException base 13 Catching Exception Catching Exception catches all derived types of Exception –base class for all exception types void Process() { try {... } catch (Exception e) {... }... } catch any exception 14 General catch /


 2002 Prentice Hall. All rights reserved. 1 Chapter 8 – Object-Based Programming Outline 8.1Introduction 8.2 Implementing a Time Abstract Data Type with.

7 Properties Private and Public –Set accessor In Visual Basic instance variables as private does not guarantee data integrity. Validity checking must be done by programmers. Cannot return values indicating a failed attempt to assign invalid data to objects of the class. This could be done through exception handling/value 101 Get 102 Return mSecond 103 End Get 104 Defines the properties for Minute and error checks for erroneous input for variable value Sets variable mMinute to value  2002 Prentice Hall. All /


Four main OOP concepts abstraction creation of well-defined interface for an object, separate from its implementation e.g., Vector in Java e.g., key functionalities.

#include … ifstream fileobj(“f.dat”, ios::in); // create input file object fileobj >> data; // read from file ifstream is derived class of istream C.f. Fig. 14.7 Open and Close File Using scope rule { ofstream myfile(“dat.d”, ios::out); myfile /cpp 2// A simple exception handling example. 3// Checking for a divide-by-zero exception. 4#include 5 6using std::cout; 7using std::cin; 8using std::endl; 9 10// Class DivideByZeroException to be used in exception 11// handling for throwing an exception on a division/


7/3/2015Data Mining: Concepts and Techniques 1 Data Mining: Concepts and Techniques (3 rd ed.) — Chapter 8 — Jiawei Han, Micheline Kamber, and Jian Pei.

7/3/2015Data Mining: Concepts and Techniques 1 Data Mining: Concepts and Techniques (3 rd ed.) — Chapter 8 — Jiawei Han, Micheline Kamber, and Jian / Classification Accuracy: Ensemble Methods Handling Different Kinds of Cases in Classification Summary July 3, 2015Data Mining: Concepts and Techniques74 Summary (I) Classification is a form of data analysis that extracts models describing important data classes. Effective and scalable methods have been developed for decision tree induction, Naive Bayesian/


Chapter 7 Improving the User Interface

is thrown Exceptions sent immediately to catch clause Skipping remainder of code in try clause Fundamentals of Java Handling Number Format Exceptions During Input (cont.) If no statement throws an exception within the try clause, the/Pattern Figure 7-4: Interface for the GUI-based temperature conversion program Fundamentals of Java The Model/View/Controller Pattern (cont.) Create classes to represent: Model: The data that the program uses and the operations that can be performed on that data View: What/


Files and Streams- II. Outline Introduction Data Hierarchy Files and Streams Creating a Sequential-Access File Reading Data from a Sequential-Access File.

button 113 Protected Sub cmdDelete_Click(ByVal sender As System.Object, _ 114 ByVal e As System.EventArgs) Handles cmdDelete.Click 115 116 Hide() hide StartDialog 117 deleteDialog.Show() show DeleteDialog 118 End Sub cmdDelete_Click /7 Deitel namespaces 8 Imports BankLibrary 9 10 Public Class FrmUpdateDialog 11 Inherits FrmBankUI 12 13 label and textbox for user to enter transaction data 14 Friend WithEvents lblTransaction As Label 15 Friend WithEvents txtTransaction As TextBox 16 17 buttons for saving data/


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