Chapter 12
The java.lang Package

RuntimeException

Name

RuntimeException

Synopsis

Class Name:

java.lang.RuntimeException

Superclass:

java.lang.Exception

Immediate Subclasses:

java.lang.ArithmeticException,

java.lang.ArrayStoreException,

java.lang.ClassCastException,

java.lang.IllegalArgumentException,

java.lang.IllegalMonitorStateException,

java.lang.IllegalStateException,

java.lang.IndexOutOfBoundsException,

java.lang.NegativeArraySizeException,

java.lang.NullPointerException,

java.lang.SecurityException,

java.util.EmptyStackException,

java.util.MissingResourceException,

java.util.NoSuchElementException

Interfaces Implemented:

None

Availability:

JDK 1.0 or later

The RuntimeException class is the superclass of the standard run-time exceptions that can be thrown in Java. The appropriate subclass of RuntimeException is thrown in response to a run-time error detected at the virtual machine level. A run-time exception represents a run-time condition that can occur generally in any Java method, so a method is not required to declare that it throws any of the run-time exceptions.

A Java program should try to handle all of the standard run-time exception classes, since they represent routine abnormal conditions that should be anticipated and caught to prevent program termination.

Class Summary

public class java.lang.RuntimeException extends java.lang.Exception {
  // Constructors
  public RuntimeException();
  public RuntimeException(String s);
}

Description: This constructor creates a RuntimeException with no associated detail message.

public RuntimeException(String s)

Parameters

s: The detail message.

Description

This constructor creates a RuntimeException with the specified detail message.

Inherited Methods

Method	Inherited From	Method	Inherited From
`clone()`	`Object`	`equals(Object)`	`Object`
`fillInStackTrace()`	`Throwable`	`finalize()`	`Object`
`getClass()`	`Object`	`getLocalizedMessage()`	`Throwable`
`getMessage()`	`Throwable`	`hashCode()`	`Object`
`notify()`	`Object`	`notifyAll()`	`Object`
`printStackTrace()`	`Throwable`	`printStackTrace(PrintStream)`	`Throwable`
`printStackTrace(PrintWriter)`	`Throwable`	`toString()`	`Object`
`wait()`	`Object`	`wait(long)`	`Object`
`wait(long, int)`	`Object`