Method name: String.concat();

public class Main {
    public static void main(String[] args) {
        String sentence1="Hello ";
        System.out.println(sentence1.concat("Java"));
    }

}

Output:
Hello Java

1. Write a program to concat 2 string
2. Write a program to find length of a string
3. Write a program to check if a keyword is contained within a string
4. Write a program to find out if a string is start

Java String is a very important topic in Java. It’s basically an object, that represent sequence of char values. Also, you can create String objects by using the new keyword and a constructor.

char[] ch={‘r’,’o’,’a’,’d’,’t’,’o’,’s’,’d’,’e’,’t’};
String string=new String(ch);

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