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Iterate through the values of TreeMap in Java
Use Iterator and the values() method to iterate through the values of TreeMap.
Let us first create a TreeMap and add some elements −
TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"PHP"); m.put(2,"jQuery"); m.put(3,"JavaScript"); m.put(4,"Ruby"); m.put(5,"Java"); m.put(6,"AngularJS"); m.put(7,"ExpressJS");
Iterate through the values −
Collection res = m.values();
Iterator i = res.iterator();
while (i.hasNext()) {
System.out.println(i.next());
}The following is the complete example to iterate through the values −
Example
import java.util.*;
public class Demo {
public static void main(String args[]) {
TreeMap<Integer,String> m = new TreeMap<Integer,String>();
m.put(1,"PHP");
m.put(2,"jQuery");
m.put(3,"JavaScript");
m.put(4,"Ruby");
m.put(5,"Java");
m.put(6,"AngularJS");
m.put(7,"ExpressJS");
System.out.println("TreeMap Elements...");
Collection res = m.values();
Iterator i = res.iterator();
while (i.hasNext()) {
System.out.println(i.next());
}
}
}Output
TreeMap Elements... PHP jQuery JavaScript Ruby Java AngularJS ExpressJS
Updated on: 30-Jul-2019
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