A DESCRIPTION OF THE PROBLEM :
Zero-length arrays are immutable values, therefore, it should be permissible to allow all zero-length arrays to compile with a constant value. For example, the compiler should maintain a single copy of an empty byte array and assign it to both b1, b2.

    byte b1[] = new byte[0];
    byte b2[] = new byte[0];
    if (System.identityHashCode(b1) != System.identityHashCode(b2)) {
      System.out.println("Different objects");
    }