1. Java-Assignment #4
(Due, April. 9, 2004)
1.(20) Write a program to implement an interface with a lamp and five buttons labeled with ‘red’, ‘green’, ‘blue’, ‘black’ and ‘grey’, respectively. When a button is clicked, the lamp will be changed to the color specified by the botton lable. (Using Java 1.1 event model.)
2.(30) Given a bit string (32 bits). Write a java program to check whether it contains only two consecutive 1s and all the other bits are 0s. (E.g., is such a string.)

2. Java-Assignment #4 3. (a) Answer the following questions:
(Due, April. 9, 2004)
3. (a) Answer the following questions:
What is a thread?
Name two ways to create a thread.
What is the meaning of “synchronized”? (5)
(b) Implement the program (with class name “DeadlocDemo”) shown in the lecture notes. (10)
(c) Analyze the output of the program. (5)

3. Java-Assignment #4
(Due, April. 9, 2004)
4. (a) Implement a program to input the following into a file:
true, ‘A’, , 23, -9.3, 21, -23, 90, 7.6 (8)
(b) Implement a program to read data from the file created by 2(a) (8)
5.(14) Implement a program to input a table containing the visible Ascii characters into a file and then read it from the file (and display it on the screen).