public abstract class AbstractCalculator{
public final int calculate(String exp,String opt){
int array[] = split(exp,opt);
return calculate(array[0],array[1]);
}
abstract public int calculate(int num1,int num2);
public int[] split(String exp,String opt){
String array[] = exp.split(opt);
int arrayInt[] = new int(2);
arrayInt[0] = Integer.parseInt(array[0]);
arrayInt[1] = Integer.parseInt(array[1]);
return arrayInt;
}
}
public class Plus extends AbstractCalculator{
@Override
public int calculate(int num1,int num2){
return num1+num2;
}
}
public class Test{
public static void main(String[] args){
String exp = "8+8";
AbastractCalculator ac = new Plus();
int result = ac.calculate(exp,"\\+");
System.out.println(result);
}