How to use increment and decrement operators in Java

Explanation

1. The self-increment () self-decrement (-) operator is a special arithmetic operator. It requires two operands to operate, and the self-increment The self-reduce operator is one operand.

2. Prefix auto-increment and auto-decrement method (a, -a): perform self-increment or self-decrement operation, and then perform expression operation.

3. Suffix auto-increment and self-decrement method (a, a-): perform expression operation first, and then perform auto-increment or self-decrement operation.

Example

public static void main(String[] args) {
    int a = 5;//定义一个变量；
    int b = 5;
    int x = 2 * ++a;
    int y = 2 * b++;
    //自增运算符前缀运算后a=6,x=12
    System.out.println("自增运算符前缀运算后a=" + a + ",x=" + x);
    //自增运算符后缀运算后b=6,y=10
    System.out.println("自增运算符后缀运算后b=" + b + ",y=" + y);
}

What are the characteristics of Java

1.As a representative of static object-oriented programming language, Java language realizes object-oriented theory, Allows programmers to perform complex programming with elegant thinking.

2.Java has the characteristics of simplicity, object-oriented, distributed, security, platform independence and portability, and dynamic nature.

3. Use Java to write desktop applications, Web applications, distributed systems and embedded system applications, etc.

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