package java.lang; public class RuntimeException extends Exception{ /** Constructs a new runtime exception with <code>null</code> as its * detail message. The cause is not initialized. */ public RuntimeException() { super(); } /** Constructs a new runtime exception with the specified detail message. * The cause is not initialized. * * @param message the detail message. The detail message is saved for * later retrieval by the getMessage() method. */ public RuntimeException(String message) { super(message); } }