b); } public static void main(String[] args) { ThisExample obj = new ThisExample(10, 20); obj.display(); } } Powered By In this example, the this keyword is used to differentiate between instance variables a an
System.out.println("number="+number+";number="+number2);}public static voidmain(String[] args) { ThisDemo tt=newThisDemo();tt.increment().increment().increment().print();} }
java语言给了keywordthis这个功能,那就是用this调用构造函数,并且也是通过參数不同选择调用不同的构造函数. 我们来看一个样例: classPerson{privateStringname;privateintage;Person()//构造方法1{System.out.println("person run");}Person(Stringname)//构造方法2{=name;}Person(Stringname,intage)//构造方法3{=...
Java assert keyword is used to create assertions in Java that enable us to test the assumptions about our program. For example, an assertion may be to make sure that an employee’s age is a positive number and greater than 18.Java assert statements contain a boolean expression that must be...
[javase学习笔记]-7.6 thiskeyword的原理,这一节我们来讲一个keyword。就是thiskeyword。我们还是通过样例来看吧:classPerson{privateStringname;privateintage;Person(Stringn,inta){name=n;age=a;}public
Reason is that whenever any final field/reference is evaluated as “constant expression“, it is serialized by JVM ignoring the presence of transient keyword. In above example, value “password” is a constant expression and instance of logger “demo” is reference. So by rule, confidentialInfo...
1)通过thiskeyword能够明白的訪问成员变量。解决与局部变量重名的矛盾! (成员变量与局部变量冲突的时候) class Student{ int id; public Student(int id){ this.id=id; } public int getId(){ return this.id; } } 构造方法中的參数是id,它是一个局部变量与成员变量id重名。
Example 1: Basic For Loop publicclassBasicForLoop{publicstaticvoidmain(String[]args){for(int i=0;i<5;i++){System.out.println("Iteration: "+i);}}} In this example, the loop initializesito 0, checks ifiis less than 5, and incrementsiby 1 after each iteration. The loop prints the va...
, we pass a reference to the current instance. 5. returning this we can also use this keyword to return the current class instance from the method. to not duplicate the code, here’s a full practical example of how it’s implemented in the builder design pattern . 6. the this...
Using this with a Field The most common reason for using the this keyword is because a field is shadowed by a method or constructor parameter. For example, the Point class was written like this public class Point { public int x = 0; public int y = 0; //constructor public Point(int ...