Java TreeSet clear() method

The clear() method of TreeSet class is used to clear elements from the set and the set becomes empty.

Syntax:

Example 1

import java.util.*;
public class TreeSetclear1
{
  public static void main(String as[]){
  TreeSet <Integer>obj = new TreeSet<Integer>();
  obj.add(2);	
  obj.add(8);
  obj.add(5);
  obj.add(1);
  obj.add(10);
  System.out.println("TreeSet: " +obj);
  obj.clear();
  System.out.println("TreeSet after clear: " +obj);
  }
}

Output:

TreeSet: [ 1, 2, 5, 8, 10 ]
TreeSet after clear: []

Example 2

import java.util.*;
public class TreeSetclear2
{
  public static void main(String as[]){
  TreeSet <String> obj = new TreeSet<String>();
  TreeSet <Integer> obj1 = new TreeSet<Integer>();
  obj.add("B");	
  obj.add("b");
  obj.add("A");
  obj.add("a");
  obj1.add(6);
  obj1.add(3);
  obj1.add(9);
  obj1.add(1);
  System.out.println("TreeSet: " +obj+" "+obj1);
  obj1.clear();
  System.out.println("TreeSet after clear: " +obj+" "+obj1);
  }
}

Output:

TreeSet: [ A, B, a, b ] [ 1, 3, 6, 9 ]
TreeSet after clear: [ A, B, a, b ] [ ]

Next TopicJava-treeset-clone-method

← prev next →

We provides tutorials and interview questions of all technology like java tutorial, android, java frameworks

Contact info

G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India

[email protected].

Java TreeSet clear() method

Syntax:

Example 1

Example 2

Learn Important Tutorial

B.Tech / MCA

Preparation

Contact info

Follow us

Tutorials

Interview Questions

Online Compiler

Python

AI, ML and Data Science

Java

B.Tech and MCA

Web Technology

Software Testing

Technical Interview

Java Interview

Web Interview

Database Interview

Company Interviews

Java Methods

Java Calendar

Java Process

Java Timer

Java Timertask

Java Character

Java Currency

Java Random

Java Scanner

Java Locale

Java System

Java TimeZone

Java TreeSet

Java Enum

Java EnumMap

Java Matcher

Java PriorityQueue

Java Throwable

Java Double

Java ThreadGroup

Java ThreadLocalRandom

Java HashSet

Java Float

Java Short

Java StringBuffer

Java StringBuilder

Java ThreadLocal

Java TreeSet clear() method

Syntax:

Example 1

Example 2

Learn Important Tutorial

B.Tech / MCA

Preparation

Contact info

Follow us

Tutorials

Interview Questions

Online Compiler