Three uses of this keyword in java

This is an object of its own, representing the object itself. It can be understood as: a pointer to the object itself.

The usage of this in Java can be roughly divided into three types:

1. Ordinary direct reference, this is equivalent to pointing to the current object itself.

(Recommended tutorial:java introductory tutorial)

2. The names of participating members have the same name, use this to distinguish them:

public Person(String name, int age) { this.name = name; this.age = age; }

3. Quote The constructor of this class

class Person{ private String name; private int age; public Person() { } public Person(String name) { this.name = name; } public Person(String name, int age) { this(name); this.age = age; } }

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