为什么在显式布尔测试中会出现死代码警告，但在隐式测试中却没有

Question

I was wondering why the following implicit testing for boolean true produce no dead code warning, while explicit testing produces one?

For example:

public void noDeadCodeWarning()
{
    final boolean x = false;
    if ( x )
    {
      System.out.println("This is dead code");  // no warning
    }
}

public void hasDeadCodeWarning()
{
    final boolean x = false;
    if ( x == true )
    {
      System.out.println("This is dead code");  // yes warning
    }
}

I'm using eclipse mars. and Java 1.8

Answer 1

In second method the IDE evaluate the expression so it say that it is dead code but in first method you have passed Boolean value.

According to IDE if statement need Boolean value as condition so it doesn't evaluate