The Program given below checks and helps the understanding of while loops in Java programming.
What would be the output after executing following code :

public class Example13 {
public static void main(String[] args) throws Exception {
int a = 30;
while (a) {
System.out.print("value:" + a--);
}
}
}

What would be the output after executing given above code :

1. Compile error

2.  30 29,.....untill 1

3.  1 2 3.....untill 30

4.  no output

Answer :

(1)

Explanation :

'While' statement should contain a 'Boolean' value ,'condition' or 'expression' , whose outcome must be of  type Boolean.

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