How to define constants in Java

2 years ago
Noah Thompson
1 minute

In Java, the final keyword can be used to define constants, whose values cannot be changed after being defined.

Constants can be defined anywhere within a class, but they are typically defined as static final class member variables for global access.

Here is an example of defining constants:

public class MyClass {
    public static final int MAX_VALUE = 100; // 定义一个整数常量

    public static final String DEFAULT_NAME = "John"; // 定义一个字符串常量

    public static final double PI = 3.14; // 定义一个浮点数常量

    // ...
}

Please note that constants are typically named with all capital letters, and multiple words are separated by underscores. This is a common naming convention that can improve code readability.

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