java.lang.NullPointerException Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package java.lang;
/**
* Thrown when a program tries to access a field or method of an object or an
* element of an array when there is no instance or array to use, that is if the
* object or array points to {@code null}. It also occurs in some other, less
* obvious circumstances, like a {@code throw e} statement where the {@link
* Throwable} reference is {@code null}.
*/
public class NullPointerException extends RuntimeException {
private static final long serialVersionUID = 5162710183389028792L;
/**
* Constructs a new {@code NullPointerException} that includes the current
* stack trace.
*/
public NullPointerException() {
}
/**
* Constructs a new {@code NullPointerException} with the current stack
* trace and the specified detail message.
*
* @param detailMessage
* the detail message for this exception.
*/
public NullPointerException(String detailMessage) {
super(detailMessage);
}
}