//using String class
public class assign4 {
	static String str="hello java.";
	static String s2="and Amit.";
	public static void main(String args[]){
		System.out.println("In uppercase: "+str.toUpperCase());
		System.out.println("replacing e with o: "+str.replace('e','o'));
		System.out.println("joining : "+str.concat(s2));
		System.out.println("position of j: "+str.indexOf('j'));
	}
}