Program Creat Menu

public class Menu {

public static void main(String[] args) {
char choice;
int i=1;
while(i==1){
System.out.println("1.Add");
System.out.println("2.Sub");
System.out.println("3.Mul");
System.out.println("4.Def");
System.out.println("5.Pow");
System.out.println("6.square");

choice=Console.readChar();
switch(choice){
case '1':
int a,b,c;
System.out.print("Enter A : ");
a=Console.readInt();
System.out.print("Enter B : ");
b=Console.readInt();
c=a+b;
System.out.println("Ans is "+c);
break;
case '2':
int a2,b2,c2;
System.out.print("Enter A : ");
a2=Console.readInt();
System.out.print("Enter B : ");
b2=Console.readInt();
c2=a2-b2;
System.out.println("Ans is "+c2);
break;
case '3':
int a3,b3,c3;
System.out.print("Enter A : ");
a3=Console.readInt();
System.out.print("Enter B : ");
b3=Console.readInt();
c3=a3*b3;
System.out.println("Ans is "+c3);
break;
case '4':
int a4,b4,c4;
System.out.print("Enter A : ");
a4=Console.readInt();
System.out.print("Enter B : ");
b4=Console.readInt();
c4=a4/b4;
System.out.println("Ans is "+c4);
break;
case '5':
int a5,b5;
double c5;
System.out.print("Enter A : ");
a5=Console.readInt();
System.out.print("Enter B : ");
b5=Console.readInt();
c5=Math.pow(a5,b5);
System.out.println("Power is "+c5);
break;
case '6':
int a6;
double b6;
System.out.print("Enter Square root : ");
a6=Console.readInt();
b6=Math.sqrt(a6);
System.out.println("Square root is "+(int)b6);
break;
case 'x':
i=0;
break;

}
}

}
}