Here you can find the source of equals(ZonedDateTime ZDT1, ZonedDateTime ZDT2)
public static boolean equals(ZonedDateTime ZDT1, ZonedDateTime ZDT2)
//package com.java2s; /* =========================================================================== * Copyright (C) 2016 CapsicoHealth Inc. * * Licensed 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.//from w w w . java 2 s.c o m */ import java.time.ZonedDateTime; public class Main { public static boolean equals(String Str1, String Str2) { return Str1 == null ? Str2 == null : Str2 == null ? false : Str1.equals(Str2); } public static boolean equals(String Str1, char c) { return Str1 != null && Str1.length() == 1 && Str1.charAt(0) == c; } public static boolean equals(ZonedDateTime ZDT1, ZonedDateTime ZDT2) { return ZDT1 == null ? ZDT2 == null : ZDT2 == null ? false : ZDT1.equals(ZDT2); } }