Print Collection

OutPut

Tree Map Example!

Keys of tree map: [1, 2, 3, 4, 5, 6, 7]

Values of tree map: [Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday]

Key: 5 value: Thursday

First key: 1 Value: Sunday

Last key: 7 Value: Saturday

Removing first data: Sunday

Now the tree map Keys: [2, 3, 4, 5, 6, 7]

Now the tree map contain: [Monday, Tuesday, Wednesday, Thursday, Friday, Saturday]

Removing last data: Saturday

Now the tree map Keys: [2, 3, 4, 5, 6]

Now the tree map contain: [Monday, Tuesday, Wednesday, Thursday, Friday]

package com.swain.cell;

import java.util.TreeMap;

public class TreeExample {

       public static void main(String[] args) {

              System.out.println("Tree Map Example!\n");

              TreeMap tMap = new TreeMap();

              tMap.put(1, "Sunday");

              tMap.put(2, "Monday");

              tMap.put(3, "Tuesday");

              tMap.put(4, "Wednesday");

              tMap.put(5, "Thursday");

              tMap.put(6, "Friday");

              tMap.put(7, "Saturday");

              System.out.println("Keys of tree map: " + tMap.keySet());

              System.out.println("Values of tree map: " + tMap.values());

              System.out.println("Key: 5 value: " + tMap.get(5) + "\n");

              System.out.println("First key: " + tMap.firstKey() + " Value: "

                           + tMap.get(tMap.firstKey()) + "\n");

              System.out.println("Last key: " + tMap.lastKey() + " Value: "

                           + tMap.get(tMap.lastKey()) + "\n");

              System.out.println("Removing first data: "

                           + tMap.remove(tMap.firstKey()));

              System.out.println("Now the tree map Keys: " + tMap.keySet());

              System.out.println("Now the tree map contain: " + tMap.values() + "\n");

              System.out

                           .println("Removing last data: " + tMap.remove(tMap.lastKey()));

              System.out.println("Now the tree map Keys: " + tMap.keySet());

              System.out.println("Now the tree map contain: " + tMap.values());

       }

}