Home > Java > javaTutorial > body text

Detailed explanation of assignment methods of Java enumeration types

WBOY
Release: 2024-02-01 08:52:06
Original
1299 people have browsed it

Detailed explanation of assignment methods of Java enumeration types

Java enumeration type is a special type that allows you to define a set of constants that can be values ​​of any type. Enumeration types can be numbers, strings, or any other type of value.

To define an enumeration type, you can use the enum keyword. For example:

public enum Color {
  RED,
  GREEN,
  BLUE
}
Copy after login

In this example, we define an enumeration type Color, which has three constants: RED, GREEN and BLUE.

To use an enumeration type, you can use the name of the enumeration type to access its constants. For example:

Color color = Color.RED;
Copy after login

In this example, we assign the Color.RED constant to the color variable.

Enumeration types can also have their own methods and properties. For example:

public enum Color {
  RED(255, 0, 0),
  GREEN(0, 255, 0),
  BLUE(0, 0, 255);

  private int red;
  private int green;
  private int blue;

  private Color(int red, int green, int blue) {
    this.red = red;
    this.green = green;
    this.blue = blue;
  }

  public int getRed() {
    return red;
  }

  public int getGreen() {
    return green;
  }

  public int getBlue() {
    return blue;
  }
}
Copy after login

In this example, we define an enumeration type Color, which has three constants: RED, GREEN and BLUE. Each constant has its own red, green, and blue properties. We also define a constructor that accepts three parameters: red, green, and blue. This constructor assigns these parameters to the constant red, green, and blue properties. We also define three methods: getRed(), getGreen(), and getBlue(). These methods return the values ​​of the red, green, and blue properties of constants.

To use the methods and properties of an enumeration type, you can use the name of the enumeration type to access its constants, and then use the name of the constant to access its methods and properties. For example:

Color color = Color.RED;
int red = color.getRed();
int green = color.getGreen();
int blue = color.getBlue();
Copy after login

In this example, we assign the Color.RED constant to the color variable. Then, we use the color.getRed(), color.getGreen(), and color.getBlue() methods to get the values ​​of the red, green, and blue properties of the constant.

Enumeration types are a very useful tool that can help you organize and manage data. Enumeration types can be used to define a set of constants, which can be values ​​of any type. Enumerated types can also have their own methods and properties. Enumeration types can be used to organize and manage data and can be used to define a set of constants, which can be values ​​of any type.

The above is the detailed content of Detailed explanation of assignment methods of Java enumeration types. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template