Write a program Count String Using Java - Technology369kk

Program:

public class StringCount {

public static void main(String arg[]){

String str1 = "Hello";

String str2 ="World";

// 1. Using + operator

String str3 = str1 +str2;

System.out.println("Sting concate using + operator:"+str3);

// 2. Using string.concate() method

String str4 = str1.concat(str2);

System.out.println("String concat using String concate method:"+str4);

// 3. Using StringBuffer.append method

String str5 = new StringBuffer().append(str1).append(str2).toString();

System.out.println("String concat using StringBuffer append method: "+str5);

}

}

Answer:

Sting concate using + operator:HelloWorld

String concat using String concate method:HelloWorld

String concat using StringBuffer append method: HelloWorld