*/classPeople{privateStringname;publicPeople(Stringname){this.name=name;}@Overridepublicbooleanequals(Objectobj){// TODO Auto-generated method stub//如果是自己if(this==obj){returntrue;}//如果是空if(obj==null){returnfalse;}//比较两个People的名字是否相同if(obj!=null&&objinstanceofPeople){if((...
equals() methodIn java equals() method is used to compare equality of two Objects. The equality can be compared in two ways:Shallow comparison: The default implementation of equals method is defined in Java.lang.Object class which simply checks if two Object references (say x and y) refer ...
Theequalsmethod for classObjectimplements the most discriminating possible equivalence relation on objects; that is, for any non-null reference valuesxandy, this method returnstrueif and only ifxandyrefer to the same object (x == yhas the valuetrue). String类重写了equals方法: public boolean equal...
The equals() method compares two strings, and returns true if the strings are equal, and false if not.Tip: Use the compareTo() method to compare two strings lexicographically.Syntaxpublic boolean equals(Object anotherObject) Parameter Values...
Note that it is generally necessary to override thehashCodemethod whenever this method is overridden, so as to maintain the general contract for thehashCodemethod, which states that equal objects must have equal hash codes. Java documentation forjava.lang.Object.equals(java.lang.Object). ...
java 双等于 java等于号与equals,首先“==”是运算符号,比较的是“==”两边变量的值;equals是Object类的一个方法,Object是所有类的父类,所以所有类都可以使用equals方法,在没有被重写的情况下,equals方法是用来比较两个对象的引用是否相等,即是否指向同一个对象。下
编译源代码: javac LongTest.java 对编译后的类文件进行反编译: javap -c LongTest 得到下面反编译的代码: Compiled from "LongTest.java" public class com.wupx.demo.LongTest { public com.wupx.demo.LongTest(); Code: 0: aload_0 1: invokespecial #1 // Method java/lang/Object."<init>":()...
The equals method implements an equivalence relation on non-null object references: <ul> <li>It is reflexive: for any non-null reference value x, x.equals(x) should return true. <li>It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and ...
The equals method implements an equivalence relation on non-null object references: <ul> <li>It is reflexive: for any non-null reference value x, x.equals(x) should return true. <li>It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and ...
The equals method implements an equivalence relation on non-null object references: <ul> <li>It is reflexive: for any non-null reference value x, x.equals(x) should return true. <li>It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and ...