Boxing Query

[narain ashwin]

Hi,
Was working out boxing concepts from KB book @ page 245, found something strange

   public class Pass2   
{  
    public static void main(String ...a)  
    {  
        Integer i1=127;  
        Integer i2 =127;  
        if( i1 !=i2)  
            System.out.println( "1.Not Equal");  
          
        i1=128;  
        i2 =128;  
        if( i1 !=i2)  
            System.out.println( "2.Not Equal");  
          
    }  
  
}   

it seems upto 127 ( to be precise in the byte range i.e -128 to 127 ) JVM uses the same object for subsequent assignments, whereas from 128 it creates different objects. Any generalization explanation?

[Ankit Garg]

There have been discussions in the past about this like here and here...