Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.Collections;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

public class Main {
    public static void main(String[] s) {
        // create sorted map
        SortedMap<String, String> map = new TreeMap<String, String>();

        // populate the set
        map.put("1", "New");
        map.put("2", "to");
        map.put("3", "java2s.com");

        System.out.println("Initial sorted map value: " + map);

        // create unmodifiable sorted map
        Map<String, String> unmodsortmap = Collections.unmodifiableSortedMap(map);

        // try to modify the sorted map
        unmodsortmap.put("4", "Modify");
    }
}