Constant - Char & String

[Niyas Ahmed Sheikh]

public class Constants1
 {
     private Constants1()
     {
 
     }
 
     public static void main(String[] args)
     {
         char c1 = 'x';
         final char c2 = 'y';
         int i1 = 7;
         final int i2 = 8;
         final int i3 = i1 >>> 3;
         final int i4 = i2 >>> 4;
 
         System.out.println("xxx" == (c1 + "xx"));
         System.out.println("yxx" == (c2 + "xx"));
         System.out.println("7xx" == (i1 + "xx"));
         System.out.println("8xx" == (i2 + "xx"));
         System.out.println("7xx" == (i3 + "xx"));
         System.out.println("8xx" == (i4 + "xx"));
     }
 } 

Output:
false true false true false false

For me it seems to be true for all the things? How the output comes like that? Can anyone explain why?

[Norm Radder]

You need to read the doc for the == operator.
What is it comparing when the operands are objects?
For compairing objects, use the equals() method.

Because of the way the JVM uses strings, sometimes two String references will be == but not in general.