Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;

public class Main {
    public static void main(String[] a) {
        Map<String, String> yourMap = new HashMap<String, String>();
        yourMap.put("1", "one");
        yourMap.put("2", "two");
        yourMap.put("3", "three");

        Map<String, Object> map = new LinkedHashMap<String, Object>();

        List<String> keyList = new ArrayList<String>(yourMap.keySet());
        List<String> valueList = new ArrayList<String>(yourMap.values());
        Set<String> sortedSet = new TreeSet<String>(valueList);

        Object[] sortedArray = sortedSet.toArray();
        int size = sortedArray.length;

        for (int i = 0; i < size; i++) {
            map.put(keyList.get(valueList.indexOf(sortedArray[i])), sortedArray[i]);
        }

        Set ref = map.keySet();
        Iterator it = ref.iterator();

        while (it.hasNext()) {
            String i = (String) it.next();
            System.out.println(i);
        }
    }
}