Wrapper Equality test

[Vidyavathi saravanan]

class D {
  public static void main (String[] args) {
    Boolean b1 = Boolean.valueOf("trUE");           // 1
    Boolean b2 = Boolean.valueOf("Even more true"); // 2
    Boolean b3 = Boolean.valueOf(null);             // 3
    System.out.print((b1==b2) + ",");
    System.out.print((b2==b3) + ",");
    System.out.println(b3==b1);
}}

Answer: false,true,false.
I wonder why b2==b3 comes as true.[Hoping that they are 2 different instances?!]

[Joe Borderi]

From the Boolean class:

public static Boolean valueOf(boolean�b)

Returns a Boolean instance representing the specified boolean value. If the specified boolean value is true, this method returns Boolean.TRUE; if it is false, this method returns Boolean.FALSE. If a new Boolean instance is not required, this method should generally be used in preference to the constructor Boolean(boolean), as this method is likely to yield significantly better space and time performance.