Why in Java, (“string”).equals(var) recommended other than (var).equals(“string”)?

Question

I have seen most cases developers use first string and after that variable used in .equal operation. What is the reason?

Answer 1

public static void badOne() {
    String s = null;
    System.out.println(s.equals("abc"));
    // This function will throw null pointer
}

public static void goodOne() {
    String s = null;
    System.out.println("abc".equals(s));
    // This will print false
}