[Java 소스] 더하기 연산

[Java 소스] 더하기 연산

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 Program.java

public class Program {

    public static void main(String[] args){

        exAdd();

    }

    private static void exAdd() {

        int i = 4;

        int j = 5;

        int re = 0;

       

        re = i+j;

        System.out.println("1. re:"+ re);

       

        String s1 = "Hello";

        String s2 = "World";

        String s3;

       

        s3 = s1 + s2;

        System.out.println("2. s3:"+ s3);       

    }

} 

실행 결과

1. re: 9

2. s3: HelloWorld

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본문

[Java] 2.2.1 산술 연산