Question

How to concatenate multiple strings in Java

Answer 1

public class MyClass {
    public static String ConcatenateStrings(String... s) {
        StringBuilder sb = new StringBuilder();
        
        for (int i = 0; i < s.length; i++) {
            sb = sb.append(s[i]);
        }
     
        return sb.toString();
    }
    public static void main(String args[]) {
        String str1 = "java";
        String str2 = "c";
        String str3 = "c++";
        String str4 = "c#";
 
        String result = ConcatenateStrings(str1, str2, str3, str4);

        System.out.println(result);
    }
}




/*
run:

javacc++c#

*/

 

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Answer 2

public class MyClass {
    public static String ConcatenateStrings(String... s) {
        String result = "";
        
        for (int i = 0; i < s.length; i++) {
            result = result + s[i];
        }
     
        return result;
    }
    public static void main(String args[]) {
        String str1 = "java";
        String str2 = "c";
        String str3 = "c++";
        String str4 = "c#";
 
        String result = ConcatenateStrings(str1, str2, str3, str4);

        System.out.println(result);
    }
}




/*
run:

javacc++c#

*/

 

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