What is the significance of 'this == null'?

Question

What does this ever mean in the block.

if (this == null) {
    // some code
}
else {
    // ...
}

My concern is will this == null ever be true? The Java compiler does not show any error.

Answer 1

this == null will never be true. The Java compiler will indeed let you do a few things such as that that have no real purpose, such as if (1==2) {} or throw null;

Answer 2

this == null always evaluates to false in Java