import java.io.*;
class A{
public int kuadrat(int a){ return a*a;}
public double tambah(double x, double y){return x+y;}
}
class DemokelasA{
public static void main(String[] args){
int a, b, h_1, h_2;a=3; b=5;
A b1=new A();
b1.kuadrat(a);
b1.tambah(a,b);
System.out.println(" a kuadrat="+ b1.kuadrat(a));
System.out.println(" a tambah b = "+ b1.tambah(a,b));}
}
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