Question

How to concat a string with a plus sign in Java

Answer 1

package javaapplication1;

import java.io.IOException;

public class JavaApplication1 {

    public static void main(String[] args) throws IOException {

        try {

            String s1 = "java";
            String s2 = "c";
            String s3 = "c++";

            String s = s1 + " " + s2 + " " + s3;
            System.out.println(s); 


        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
}

/*
           
run:
     
java c c++
  
 */

 

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Answer 2

package javaapplication1;

import java.io.IOException;

public class JavaApplication1 {

    public static void main(String[] args) throws IOException {

        try {

            String s = "java";
            
            s += " c";
            s += " c++";

            System.out.println(s); 
            
            String s1 = " c#";
            s += s1;
            System.out.println(s); 


        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
}

/*
           
run:
     
java c c++
java c c++ c#
  
 */

 

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