Question

How to use generic type list in Java

Answer 1

package javaapplication1;

import java.util.List;
import java.util.ArrayList;

public class GenericsTypeTest {
    public static void main(String[] args) {
	    List list = new ArrayList();
        
        list.add("java programming");
        String s = (String) list.get(0);
        System.out.println(s);
        
        list.add(100);
        Integer i = (Integer) list.get(1);
        System.out.println(i);        
        
        list.add(3.14);
        Double d = (Double) list.get(2);
        System.out.println(d);
    }
}

/*
run:

java programming
100
3.14

*/

 

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