Java Collection Program Test-2

import java.util.HashSet;

public class Test {

public static void main(String[] args) {

HashSet hs = new HashSet();

hs.add("12");

hs.add(new String("java"));

hs.add(new StringBuffer("spring"));

hs.add(new String("hibernate"));

System.out.print(hs);

}

}

import java.util.ArrayList;

import java.util.HashSet;

import java.util.Set;

public class Test {

public static void main(String[] args) {

ArrayList al = new ArrayList();

al.add(4);

al.add(80);

al.add(56);

al.add(80);

Set st = new HashSet(al);

System.out.println(st);

}

}

import java.util.Arrays;

public class Test {

public static void main(String[] args) {

int arr[] = { 1, 34, 56, 78, 32, 90 };

Arrays.sort(arr);

System.out.println(arr[arr.length - 3]);

}

}

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

public class Test {

public static void main(String[] args) {

List list = new ArrayList(Arrays.asList("java", "hibernate", "spring"));

for (String str : list) {

if (str.equals("spring")) {

list.remove(str);

}

}

System.out.println(list);

}

}

import java.util.ArrayList;

import java.util.ListIterator;

public class Test {

public static void main(String[] args) {

ArrayList al = new ArrayList();

al.add("java");

al.add("spring");

al.add("456");

ListIterator itr = al.listIterator();

al.add("hibernate");

while (itr.hasNext()) {

System.out.println(itr.next());

}

}

}