Enthuware

public class ChangeTest {
int d=0;
char[ ] cA = { 'a' , 'b'};


public void m1(){
m2(d, cA);
System.out.println( d + ", " + cA[1] );
}
public void m2(int c, char[ ] cA2){
//
c = 2;
cA2[1] = cA2[0] = 'm';
}
public static void main(String args[]){
new ChangeTest().m1();
}

}

//Output 0, m

why the value of "d" not change?

Why do you think it should change?

There is a typo in the question's code. In the answers 3, 4 and 5 a space is clearly visible before the comma while in the code, there is not:

Fixed.
thank you for your feedback!