Learn the Java tutorial this keyword

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The This keyword in Java is a very important keyword. There are two main uses of this keyword in Java, first

public class person{

Private String username;

private int age;

Public person (String Username,int age) {

This.username = Username;

This.age = age;

}

}

Here the This keyword represents the object itself, that is, the property inside the username, the parameter username value to the property inside the username

This.age = The role of age is also the value of the parameter age to the age of the attribute

Let's look at one more example

public class person{

Private String username;

private int age;

Person () {

SYSTEM.OUT.PRINTLN ("Non-parametric construction method");

}

Public person (String Username,int age) {

This ();

This.age = age;

}

}

This is the second use of the person.

This invokes an argument-free construction method

This line of code will be executed without a reference to the value.

The second usage of this must be used in the first line.

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Learn the Java tutorial this keyword