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Compile time checking test

Let us see the compile time checking in java test with the below example.

Generics compile time checking example:

import java.util.ArrayList;
import java.util.List;
 * This class is used to show the compile time checking test.
 * @author codesjava
public class GenericsTest {
	public static void main(String args[]){
		//Arraylist without generics.
		List list1 = new ArrayList();
		//No compile time error here 
		//because no compile time checking is done. 
		list1.add(new Integer(6));
		//Arraylist with generics.	
		List<String> list2 = new ArrayList<String>();
		//Compile time error here 
		//because we are adding a integer 
		//in the string array list. 
		list2.add(new Integer(6));


Exception in thread "main" java.lang.Error: 
Unresolved compilation problem: 
The method add(String) in the type List<String> 
is not applicable for the arguments (Integer)

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