import java.lang.*;
public class HelloWorld{
    
    

     public static void main(String []args){
        final int c=7;
        final StringBuffer sb3=new StringBuffer("aabits");
        sb3.delete(0, 1);
        System.out.println(sb3);
        int[] a={3, 5};
        int[] b=a.clone();
        //a[0]=4;
        a=new int[]{4, 6};
        System.out.println(b[0]);
        String s1="Juku";
        String s2=s1;
        s1="Kati";
        System.out.println(s2);
        StringBuffer sb1=new StringBuffer("Juku");
        StringBuffer sb2=sb1;
        sb1.append("!");
        System.out.println(sb2);
     }
}