{@code RuntimeException} and its subclasses are unchecked - * exceptions. Unchecked exceptions do not need to be - * declared in a method or constructor's {@code throws} clause if they - * can be thrown by the execution of the method or constructor and - * propagate outside the method or constructor boundary. - * - * @author Frank Yellin - * @jls 11.2 Compile-Time Checking of Exceptions - * @since JDK1.0 - */ -public class RuntimeException extends Exception { - static final long serialVersionUID = -7034897190745766939L; - - /** Constructs a new runtime exception with {@code null} as its - * detail message. The cause is not initialized, and may subsequently be - * initialized by a call to {@link #initCause}. - */ - public RuntimeException() { - super(); - } - - /** Constructs a new runtime exception with the specified detail message. - * The cause is not initialized, and may subsequently be initialized by a - * call to {@link #initCause}. - * - * @param message the detail message. The detail message is saved for - * later retrieval by the {@link #getMessage()} method. - */ - public RuntimeException(String message) { - super(message); - } - - /** - * Constructs a new runtime exception with the specified detail message and - * cause.
Note that the detail message associated with - * {@code cause} is not automatically incorporated in - * this runtime exception's detail message. - * - * @param message the detail message (which is saved for later retrieval - * by the {@link #getMessage()} method). - * @param cause the cause (which is saved for later retrieval by the - * {@link #getCause()} method). (A null value is - * permitted, and indicates that the cause is nonexistent or - * unknown.) - * @since 1.4 - */ - public RuntimeException(String message, Throwable cause) { - super(message, cause); - } - - /** Constructs a new runtime exception with the specified cause and a - * detail message of (cause==null ? null : cause.toString()) - * (which typically contains the class and detail message of - * cause). This constructor is useful for runtime exceptions - * that are little more than wrappers for other throwables. - * - * @param cause the cause (which is saved for later retrieval by the - * {@link #getCause()} method). (A null value is - * permitted, and indicates that the cause is nonexistent or - * unknown.) - * @since 1.4 - */ - public RuntimeException(Throwable cause) { - super(cause); - } - - /** - * Constructs a new runtime exception with the specified detail - * message, cause, suppression enabled or disabled, and writable - * stack trace enabled or disabled. - * - * @param message the detail message. - * @param cause the cause. (A {@code null} value is permitted, - * and indicates that the cause is nonexistent or unknown.) - * @param enableSuppression whether or not suppression is enabled - * or disabled - * @param writableStackTrace whether or not the stack trace should - * be writable - * - * @since 1.7 - */ - protected RuntimeException(String message, Throwable cause, - boolean enableSuppression, - boolean writableStackTrace) { - super(message, cause, enableSuppression, writableStackTrace); - } -}