Java: Same string returns different byte arrays -

i expect byte representation of 2 identical strings identical yet not seem case. below code i've used test this.

    string test1 = "125";     string test2 = test1;      if(test1.equals(test2))     {         system.out.println("these strings same");     }      byte[] array1 = test1.getbytes();     byte[] array2 = test2.getbytes();      if(array1.equals(array2))     {         system.out.println("these bytes same");     }     else     {         system.out.println("bytes not same:\n" + array1 + " " + array2);     } 

thanks in advance help!

byte representations of 2 identical unrelated string objects identical byte-for-byte. however, not the same array object, long string objects unrelated.

your code checking array equality incorrectly. here how can fix it:

if(arrays.equals(array1, array2)) ... 

moreover, different byte arrays if call getbytes on same string object multiple times:

string test = "test"; byte[] = test.getbytes(); byte[] b = test.getbytes(); if (a == b) {     system.out.println("same"); } else {     system.out.println("different"); } 

the above code prints "different".

this because string not persist results of getbytes.

note: code call getbytes on same object twice, because line

string test2 = test1; 

does not copy string, creates second reference same string object.