CS121 Quiz 2
November 3, 2005
Name: _____________________________
1. Is the following code a valid Java program? If not, what is the problem? [10 points]
public class Test1 {
public static void main(String[] args) {
int x = 0;
if (x == 0) {
int x = 1;
System.out.println(x);
}
}
}
2. What will be printed by the following program? [10 points]
public class Test2 {
public static void main(String[] args) {
int x = 1;
switch (x) {
case 0:
System.out.println(x);
case 1:
System.out.println(x);
case 2:
System.out.println(x);
default:
System.out.println(x);
}
}
}
3. What is the function of the following program? [20 points]
public class Test3 {
public static void main(String[] args) {
if (args.length == 0)
System.exit(-1);
int left = 0, right = args.length – 1;
while (left < right) {
String temp = args[left];
