import java.lang.*;

public class AppendInsert{
	public static void main(String[] args) {
		System.out.println("StringBuffer insert and append example!");
		StringBuffer sb = new StringBuffer(0);
		//First position
		System.out.println(sb.insert(0, "vinod"));
		int len = sb.length();
		//last position
		System.out.println(sb.insert(len, "Deepak"));
		//Six position
		System.out.println(sb.insert(6, "Raj"));
		//Always last
		System.out.println(sb.append("Mohit"));
	}
}