Several uses of this keyword in java

The usage of this keyword is as follows:

1. Call the method of this class

public String introYourself() {
 return this.whoAreU() + this.haoOldAreU();
}

2. Call the attribute of this class

public void changeMyName(String name) {
 this.name = name;
}

3. Call other constructors of this class

public UserExample(String name) {
 this(name, -1);
}

4. Call the same-name method of the parent class or other specified classes

public String whoAreSuper() {
 return "super is " + UserExample.this.whoAreU() + ". ";
}

5. Hidden calling, without specifying the scope, java will search for variables or methods upwards in the entire class scope

public String whoAmI() {
   return whoAreU();
  }

Recommended tutorial: Java tutorial

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