Java BigInteger testBit() Method

The testBit() method of Java BigInteger class is used to check whether the designated bit is set or not. This method returns true if and only if the designated bit is set. This method computes (this & (1<<n)) != 0).

Syntax:

Parameter:

n- index of the bit to test

Returns:

The method returns true if and only if the designated bit is set else it will return false.

Exception:

This method throws an ArithmeticException when n is negative.

Example 1

import java.math.BigInteger;
public class BigIntegerTestBitExample1{
public static void main(String[] args){
// create a BigInteger object
BigInteger big1;
// create 2 Boolean objects
Boolean bool1,bool2;
// assign value to big1
big1= new BigInteger("5");  
// perform testBit on big1 at index
// assume n = 2 and n=3 
bool1= big1.testBit(2);   
bool2= big1.testBit(3);   

String str1 = " Test Bit on " + big1+" at index 2 returns "+bool1;
String str2 = " Test Bit on " + big1+" at index 3 returns "+bool2;

System.out.println(str1);   
System.out.println(str2);   

}
}

Test it Now

Output:

Test Bit on 5 at index 2 returns true
Test Bit on 5 at index 3 returns false

Example 2

import java.math.BigInteger;
public class BigIntegerTestBitExample2{
public static void main(String[] args){
// create a BigInteger object
BigInteger big1;
// create a Boolean object
Boolean bool;
// assign value to big1
big1= new BigInteger("5");  
// perform testBit on big1 at index
// assume n is -2 
bool= big1.testBit(-2);   
String str = " Test Bit on " + big1+" at index -2 returns "+bool;
System.out.println(str);   

}
}

Test it Now

Output:

java.lang.ArithmeticException: Negative bit address

Next TopicJava BigInteger

← prev next →

Latest Courses

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].

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 Tutorial

Control Statements

Java Object Class

Java Inheritance

Java Polymorphism

Java Abstraction

Java Encapsulation

Java Array

Java OOPs Misc

Java String

Java String Methods

Java Regex

Exception Handling

Java Inner Class

Java Multithreading

Java Synchronization

Java Networking

Java Applet

Java Reflection

Java Conversion

Java JDBC

RMI

Internationalization

Java Array Class

Java AtomicInteger Class

Java AtomicLong Methods

Java Authenticator

Java BigDecimal class

Big Integer Class

Java Boolean class

Java Byte Class

Java Class

Java Collections class

Java Compiler Class

CopyOnWriteArrayList

Java Math Methods

LinkedBlockingDeque

Java Long class

LinkedTransferQueue

Java List

Java MulticastSocket

Java Number Class

Java Phaser Class

ArrayList Methods

Java Thread Methods

Java Projects

Java Programs

Java Misc

Java Date Class

Java ListIterator Class

Java NIO Tutorial

HttpURLConnection

Java Deque

Java HttpCookie Class

Java URL class

Java List Methods

Java Vector class

Java Collection Methods

Java Socket Class

Java Executors