public class Collections extends Object

import java.util.*;
public class CollectionsExample {
    public static void main(String a[]){    
        List list = new ArrayList();
        list.add("C");
        list.add("Core Java");
        list.add("Advance Java");
        System.out.println("Initial collection value:"+list);
        Collections.addAll(list, "Servlet","JSP");
        System.out.println("After adding elements collection value:"+list);
        String[] strArr = {"C#", ".Net"};
        Collections.addAll(list, strArr);
        System.out.println("After adding array collection value:"+list);
    }
}

Initial collection value:[C, Core Java, Advance Java]
After adding elements collection value:[C, Core Java, Advance Java, Servlet, JSP]
After adding array collection value:[C, Core Java, Advance Java, Servlet, JSP, C#, .Net]

import java.util.*;
public class CollectionsExample {
    public static void main(String a[]){       
        List list = new ArrayList();
        list.add(46);
        list.add(67);
        list.add(24);
        list.add(16);
        list.add(8);
        list.add(12);
        System.out.println("Value of maximum element from the collection: "+Collections.max(list));
    }
}

Value of maximum element from the collection: 67

import java.util.*;
public class CollectionsExample {
    public static void main(String a[]){       
        List list = new ArrayList();
        list.add(46);
        list.add(67);
        list.add(24);
        list.add(16);
        list.add(8);
        list.add(12);
        System.out.println("Value of minimum element from the collection: "+Collections.min(list));
    }
}

Value of minimum element from the collection: 8