1. COMPUTER 2430 Object Oriented Programming and Data Structures I

2. File Input import java.io.*; Import java.util.Scanner;
public static void main( String args[] ) {
Scanner stdin = new Scanner( System.in );
// comment out before submitting to the grader
try
stdin = new Scanner( new File("Lab6_1.in") ); }
catch (Exception ex)
System.out.println(ex.toString());
...

3. String Method split import java.io.*; Import java.util.Scanner;
public static void main( String args[] ) throws IOException {
Scanner stdin = new Scanner( System.in );
. . .
String cmdLine;
String tokens[];
cmdLine = stdin.nextLine(); // “ ”
// space “ ” is the only delimiter
tokens = cmdLine.split(" ");
// tokens[0]: “243.15”
// tokens[1]: “5”
... }

4. Parse Methods String cmdLine; String tokens[];
cmdLine = stdin.nextLine(); // “ ”
tokens = cmdLine.split(" ");
// tokens[0]: “243.15”
// tokens[1]: “5”
double dbl = Double.parseDouble(tokens[0]);
int qVal = Integer.parseInt(tokens[1]);

5. The First Token! import java.io.*; Import java.util.Scanner;
public static void main( String args[] ) throws IOException {
Scanner stdin = new Scanner( System.in );
. . .
String cmdLine;
String tokens[];
cmdLine = stdin.nextLine(); // “ ”
tokens = cmdLine.split(" ");
// tokens[0]: “”
// tokens[1]: “243.15”
// tokens[2]: “5”
... }

6. Parsing String for Date
String to parse: “9/30/2009”
Delimiter: “/”
cmdLine = stdin.nextLine();
tokens = cmdLine.split(“/");
// tokens[0] = “9”
// tokens[1] = “30”
// tokens[2] = “2009”
// Convert to integer
int day = Integer.parseInt(tokens[1]);

7. Parsing String for Complex
String to parse: “(3.5,7.213)”
Delimiters: “(,)”
cmdLine = stdin.nextLine();
tokens = cmdLine.split(“[(,)]");
// tokens[0] = “”
// tokens[1] = “3.5”
// tokens[2] = “7.213”
// Convert to double
Double real = Double.parseDouble(tokens[1]);

8. Programming Grand Rules
Most the same as CS 1430
Each line has at most 78 columns
Indent 3 spaces
No tab keys
Braces on separate lines
One space before and one space after operator

9. Formatting Setting
K:\academic\csse\software\ NetBeans_8.1_JDK_8u91\NetBeans.txt NetBeansSettings.zip

10. NetBeans Formatting
Tools->Options->Editor->Formatting tab Select All Languages Select Tabs And Indents Check: Expand Tabs to Spaces Number of Spaces per Indent: 3 Tab Size: 3 Right Margin: 78

11. NetBeans Formatting
Tools->Options->Editor->Formatting tab Select Language Java Select Tabs And Indents Continuation Indent Size: 6 Select Braces Select New Line for all under Braces Placement Select Generate for all under Braces Generation Select Alignment Check : else, finally, while, catch Uncheck: after modifier Uncheck all under Multiline Alignment Select Comments Uncheck: Add Leading Star

12. NetBeans Formatting
Tools->Templates Select Java then Java class Click Open in Editor Change <#assign licenseFirst = "/*"> to <#assign licenseFirst = "/**"> (adding one "*") Change <#assign licensePrefix = " * "> to <#assign licensePrefix = ""> (" * " to "") Change <#assign licenseLast = " */"> to <#assign licenseLast = "*/"> (removing space in " */")

13. NetBeans Formatting
Tools->Templates Change /** * ${user} */ ${user}

14. NetBeans Formatting
Tools->Templates Change public class ${name} { } to public class ${name} {

15. NetBeans Formatting
Turn off NetBeans updates: Tools --> Plugins --> Settings tab Automatically Check for Updates, Check Interval = Never