public class UsingStringMethods {

	public static void main(String[] args) {

		int n;
	    String s = "Java programming", t = "", u = "";
	 
	    System.out.println(s);
	 
	    // Find length of string
	 
	    n = s.length();
	    System.out.println("Lenght of String = " + n);
	 
	    // Replace characters in string
	 
	    t = s.replace("Java", "C++");
	    System.out.println("Before replacing 'Java' by 'C++':" + s);
	    System.out.println("After replacing 'Java' by 'C++':" + t);
	 
	    // Concatenating string with another string
	 
	    u = s.concat(" is fun");
	    System.out.println("Before concate : " + s);
	    System.out.println("After concate : " + u);
	}
}