public boolean equals(Object anObject) { if (this == anObject) { return true; } if (anObject instanceof String) { String anotherString = (String) anObject; int n = value.length; if (n == anotherString.value.length) { char v1[] = value; char v2[] = anotherString.value; int ...
Java中String类型具有一个equals的方法能够用于推断两种字符串是否相等,可是这样的相等又与运算符==所推断的“相等”有所不同,接下来进行分析,结论由程序进行验证 String的equals函数仅仅要两个字符串“看起来”相等,就能够返回true,“看起来”相等意思指的是,当两个字符串对象所存放的内容同样时,不须要存放的内存地...
Returns a string representing the data in this sequence. void trimToSize() Attempts to reduce storage used for the character sequence. Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait Methods inherited from interface ...
publicclassDemo2{/*** String 类的定义方式* 1、直接赋值 String str = "zhangsan";* 2、通过构造方法 String(byte[] bytes, int offset, int length)* String(char[] bytes, int offset, int count)*/publicstaticvoidmain(String[]args){//方式1//String str = "zhangsan";//方式2:通过构造方法来...
// After creating the object, you can reset values of the value field by calling setNewValue(int) method. // This is a mutable class. public class MutableClassExample { private int value; public MutableClassExample(int value) { this.value= value; ...
String类 : public boolean equals(String s) 比较两个字符串内容是否相同、区分大小写 代码: AI检测代码解析 package com.itheima.stringmethod; public class Demo1Equals { public static void main(String[] args) { String s1 = "abc"; String s2 = "ABC"; ...
(Object obj) { return Objects.equals(obj.value, value); }}public class MainClass { public Set method(List testList) throws CloneNotSupportedException { Set result = new HashSet<>(); for (int a = 0; a < 100000) { for (TestClass test : testList) { result.add(test.clone()); }...
String 在创建对象如果是在静态存储区,如果两次创建的对象的值是一样的,那么地址是一样的,如果是通过new的话,地址绝对是不一样的。String的一个特点就是如果静态数据区存在,那么不会创建新的对象,而是指向这个对象。在比较的时候==是比较的地址,而提供的equals()方法,比较的是内容。
If such synchronization is required then it is recommended that java.lang.StringBuffer be used. Unless otherwise noted, passing a null argument to a constructor or method in this class will cause a NullPointerException to be thrown. Added in 1.5....
String类型//sb : StringBuilder// 类型不一样没有可比性，不要忘记用toString()转换一下if(s.equals...