I have found a strange behavior of assertions in Java (Eclipse). Easy example: If i execute this...

```
public static void main (String[] args) {
    assert(getA() == "a") : "Invalid";
    System.out.println("Assertion successful!");
}

private static String getA() 
{
    return "a";
}

```

... it will show me "Assertion successful!" as it should. However if i try this...

```
public static void main (String[] args) {
    assert(getA() + "b" == "ab") : "Invalid";
    System.out.println("Assertion successful!");
}

private static String getA() 
{
    return "a";
}

```

... I get an AssertionError. How come this Assertion doesn't return true?

**Note:**

* Don't forget to add the "-ea" Parameter in the VM arguments when testing! ([Eclipse: enable assertions](https://stackoverflow.com/questions/5509082/eclipse-enable-assertions))