Question

How to remove a value from TreeMap in Java

Answer 1

package javaapplication1;

import java.util.TreeMap;

public class JavaApplication1 {

    public static void main(String[] args) {

        TreeMap treeMap = new TreeMap();
        
        treeMap.put("1", "Java");
        treeMap.put("2", "C");
        treeMap.put("3", "C++");
        treeMap.put("4", "C#");
        treeMap.put("5", "PHP");
        treeMap.put("6", "JavaScript");
        treeMap.put("7", "Python");

        Object o = treeMap.remove("3");
        System.out.println(o);
        
        System.out.println(treeMap);
    }
}
 
/*

run:

C++
{1=Java, 2=C, 4=C#, 5=PHP, 6=JavaScript, 7=Python}

*/

 

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