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Java中的String类为什么用final修饰?

一、前言相信很多小伙伴在面试的时候都被问到过“Java中的String类为什么用final修饰?”这个问题,今天带大家一探究竟,希望小伙伴们在之后面试中遇到这个问题时,能够很顺利的回答出来,顺利斩获高薪offer。二、final关键字final是Java中的保留关键字,可以用来修饰类,方法和变量。其中,被final修饰的类不能被继承即不能拥有自己的子类,被final修饰方法不能被重写,final修饰的属性、变量初始化之后不能被修改。三、String类中如何使用final关键字及其好处String类的源码从上述源码我们可以发现以下两点:String类用final修饰,代表String类不可被继承

Java中的String类为什么用final修饰?

一、前言相信很多小伙伴在面试的时候都被问到过“Java中的String类为什么用final修饰?”这个问题,今天带大家一探究竟,希望小伙伴们在之后面试中遇到这个问题时,能够很顺利的回答出来,顺利斩获高薪offer。二、final关键字final是Java中的保留关键字,可以用来修饰类,方法和变量。其中,被final修饰的类不能被继承即不能拥有自己的子类,被final修饰方法不能被重写,final修饰的属性、变量初始化之后不能被修改。三、String类中如何使用final关键字及其好处String类的源码从上述源码我们可以发现以下两点:String类用final修饰,代表String类不可被继承

Bitcoin Price Fell Again, Can Cryptocurrency Still Be Considered a Currency?

IntroductionBitcoinlost7.23percentto$28,758.29onMay12,adecreaseof$2,241.68fromtheprevioussession'sclosing.Atonepoint,Ether,thesecond-largestcryptocurrencybehindbitcoin,fell11.56percentto$2,071.46atonepoint,$270.66lessthantheprevioussession'sclosing.Nevertheless,sinceBitcoinappearedoutofnowhere,crypt

Bitcoin Price Fell Again, Can Cryptocurrency Still Be Considered a Currency?

IntroductionBitcoinlost7.23percentto$28,758.29onMay12,adecreaseof$2,241.68fromtheprevioussession'sclosing.Atonepoint,Ether,thesecond-largestcryptocurrencybehindbitcoin,fell11.56percentto$2,071.46atonepoint,$270.66lessthantheprevioussession'sclosing.Nevertheless,sinceBitcoinappearedoutofnowhere,crypt

Which Technology Giants Can Make the Final-Metaverse-Fantasy Come True?

SomethinkthemetaverseistheobjectiveofthefutureInternetandanotherrevolutionininformationtechnology,whileothersmerelyconsideritaPonzischeme.Whileametaversemaybeinitsearlyphasesofdevelopment,manyofitsbasiccomponentsarealreadyinplace.Theyhaveeffectivelysupportedtheintegrationoftechnologiessuchasaugmente

Which Technology Giants Can Make the Final-Metaverse-Fantasy Come True?

SomethinkthemetaverseistheobjectiveofthefutureInternetandanotherrevolutionininformationtechnology,whileothersmerelyconsideritaPonzischeme.Whileametaversemaybeinitsearlyphasesofdevelopment,manyofitsbasiccomponentsarealreadyinplace.Theyhaveeffectivelysupportedtheintegrationoftechnologiessuchasaugmente

Static、Final关键字详解

1.Static详情见下面代码讲解点击查看代码packagecom.Tang.oop.demo07;publicclassStudent{privatestaticintage;//静态变量privatedoublescore;//非静态变量publicvoidrun(){go();//非静态方法可以调用静态方法}publicstaticvoidgo(){}publicstaticvoidmain(String[]args){Students1=newStudent();System.out.println(Student.age);//静态变量可以被类中的所有实例去共享//System.ou

Static、Final关键字详解

1.Static详情见下面代码讲解点击查看代码packagecom.Tang.oop.demo07;publicclassStudent{privatestaticintage;//静态变量privatedoublescore;//非静态变量publicvoidrun(){go();//非静态方法可以调用静态方法}publicstaticvoidgo(){}publicstaticvoidmain(String[]args){Students1=newStudent();System.out.println(Student.age);//静态变量可以被类中的所有实例去共享//System.ou

sonar代码扫描bug:Use try-with-resources or close this "FileInputStream" in a "finally" clause.

  下面代码/***读取文件到byte数组**@paramtradeFile*@return*/publicstaticbyte[]file2byte(FiletradeFile){try{FileInputStreamfis=newFileInputStream(tradeFile);ByteArrayOutputStreambos=newByteArrayOutputStream();byte[]b=newbyte[1024];intn;while((n=fis.read(b))!=-1){bos.write(b,0,n);}fis.close();bos.close();byte[]bu

sonar代码扫描bug:Use try-with-resources or close this "FileInputStream" in a "finally" clause.

  下面代码/***读取文件到byte数组**@paramtradeFile*@return*/publicstaticbyte[]file2byte(FiletradeFile){try{FileInputStreamfis=newFileInputStream(tradeFile);ByteArrayOutputStreambos=newByteArrayOutputStream();byte[]b=newbyte[1024];intn;while((n=fis.read(b))!=-1){bos.write(b,0,n);}fis.close();bos.close();byte[]bu