Requirment- To sort MAP based on key using Java
following is the source code-
package techartifact; import java.util.*; class SortMaps { public static void main(String args[]) { Map m=new LinkedHashMap(); m.put(1,10); m.put(3,11); m.put(5,15); m.put(2,13); m.put(4,14); Collection c=m.keySet(); System.out.println(c); Object a[]; a = c.toArray(); Arrays.sort(a); for(int i=0;i<a.length;i++) { System.out.println((Object)a[i]); } } }