java generic addition

Question

I\'m attempting implement the add method mentioned in the Generic sparse matrix addition question

class Matrix
{
  private T add(T left,          


        

Answer 1

package generics;

public class Box {

      public T j,k;
      int l;
      float f;

      @SuppressWarnings("unchecked")
    public void add(T j,T k) {
        this.j = j;
        this.k=k;

        if(j.toString().contains("."))
        {
              this.f=Float.parseFloat(j.toString())+Float.parseFloat(k.toString());


        } else{
        this.l=Integer.parseInt(j.toString())+Integer.parseInt(k.toString());
        }
      }

      public int getInt() {
        return l;
      }

      public float getFloat() {
            return f;
          }

      public static void main(String[] args) {
         Box integerBox = new Box();
         Box floatBox = new Box();

         integerBox.add(new Integer(10),new Integer(20));
         floatBox.add(new Float(2.2),new Float(3.3));

         System.out.printf("Integer Value :%d\n\n", integerBox.getInt());
         System.out.printf("float Value :%f\n", floatBox.getFloat());
      }
    }