String。equals()用法
package com.yiibai; import java.lang.*; public class StringDemo { public static void main(String[] args) { String str1 = "sachin tendulkar"; String str2 = "amrood admin"; String str3 = "amrood admin"; // checking for equality boolean retval1 = str2.equals(str1); boolean retval2 = str2.equals(str3); // prints the return value System.out.println("str2 is equal to str1 = " + retval1); System.out.println("str2 is equal to str3 = " + retval2); } }
从源码中可以看出默认的equals()方法与“==”是一致的,都是比较的对象的引用,而非对象值(这里与我们常识中equals()用于对象的比较是相饽的,原因是java中的大多数类都重写了equals()方法