Printing object in Java

java, tostring

Solution

The `print()` methods explicitly check for `null`.

public void print(String s) {
    if (s == null) {
        s = "null";
    }
    write(s);
}

Problem

I ran the following code ``` String str = null; System.out.println(str); ``` Output was null. At first, I thought that the `NullPointerException` will be thrown as printing the object implicitly calls `toString` method. So, I was surprised with the output. Then I contemplated about the output and thought that above String statement actually didn't create any object, only reference is created that doesn't point to any object. So that may be the reason of such output. Can somebody please let me know if my understanding is correct.

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