Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.

Exception in thread "main" java.lang.AssertionError: x < 0 at AssertDemo.main(AssertDemo.java:6) For either example, running AssertDemo without the -ea (enable assertions) option results in no output.

How to printf a Java String. To use the Java String printf method to format output text, follow these rules:. Use %s as the printf String specifier in the text string being formatted.; Use %S as the ...

Using Java’s String length method. To get the number of characters in a given piece of text, the Java String length() method is all you need. Just make sure the String is not null, and avoid any ...