Programming Forums - View Single Post

null_ptr0 · Nov 28th, 2007, 4:26 PM

Object is, haha, an object type, while int is a primitive type. You cannot translate objects to ints through direct casts; but if the object is of Integer, you could access and call the member method intValue() which returns the actual integer value being wrapped.
Example:

(Toggle Plain Text)

public void A(Object o) {
   if(o instanceof Integer)
	B(((Integer) o).intValue());
   else
	throw new IllegalArgumentException();
}

public void B(int i) {
    /*
        code is here
    */
}

Nov 28th, 2007, 4:26 PM	#4
null_ptr0 12 years old Join Date: Nov 2007 Posts: 80 Rep Power: 1	Re: Object to Int Object is, haha, an object type, while int is a primitive type. You cannot translate objects to ints through direct casts; but if the object is of Integer, you could access and call the member method intValue() which returns the actual integer value being wrapped. Example: (Toggle Plain Text) public void A(Object o) { if(o instanceof Integer) B(((Integer) o).intValue()); else throw new IllegalArgumentException(); } public void B(int i) { /* code is here / } public void A(Object o) { if(o instanceof Integer) B(((Integer) o).intValue()); else throw new IllegalArgumentException(); } public void B(int i) { / code is here */ } __________________ iload_0 iconst_1 ishl or iload_0 iconst_2 idiv or iload_0 iconst_2 iconst_1 imul idiv [1] & [2] use the smallest stack size