compile time constants

[sakthi moorthy]

package
sample;
public
class StaticVar {
/**
* @param args
*/
public static void main(String[ ] args) {
// TODO Auto-generated method stub
System.
out.println(x);
}
private static int x=getValue();
private static int y=5;
public static int getValue(){
return y;
}
}

how the output of program is 0 instead of 5 i think it may be of runtime constants can anyone explain the why the output is like that and what is runtime constants

[Thirugnanam Saravanan]

private static int x=getValue();

During this assignment, the value of static instance variable Y is 0 and is not initialized to 5. In the next line only you are initializing Y to 5. That's why the output is 0.

If the output should have been 5, then you have to initialize the Y value before you actually use that value. Refer the below code to get the Output of 5 :

  
 
package sample;
 
public class StaticVar  {
 
/**
 * @param args
 */
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(x);
}
 
private static int y = 5; //initialize Y value before calling getValue() method..
private static int x = getValue();
public static int getValue() {
return y;
}
}