Non-Generic Collections
class Main {
public static void main(String[] args) {
ArrayList al=new ArrayList();
al.add(new Integer(10));
al.add(new String("hai"));
al.add(new Integer(20));
System.out.println(al);
} }
public static void main(String[] args) {
ArrayList al=new ArrayList();
al.add(new Integer(10));
al.add(new String("hai"));
al.add(new Integer(20));
System.out.println(al);
} }
Generic Collections
import java.util.*;
class Main {
public static void main(String[] args) {
ArrayList<Integer> al=new ArrayList<Integer>();
al.add(new Integer(10));
al.add(new String("hai")); // Compile Time Error
al.add(new Integer(20));
System.out.println(al);
} }
class Main {
public static void main(String[] args) {
ArrayList<Integer> al=new ArrayList<Integer>();
al.add(new Integer(10));
al.add(new String("hai")); // Compile Time Error
al.add(new Integer(20));
System.out.println(al);
} }