Most viewed questions in Java

0 votes
5 answers

How to compare Strings in Java?

String fooString1 = new String("foo"); String fooString2 = ...READ MORE

Jul 12, 2018 in Java by Daisy
 • 8,120 points • 2,217 views
0 votes
1 answer

“Unable to load native-hadoop library for your platform” warning: How to resolve it?

If you are running Hadoop on 64bit CentOS, ...READ MORE

Jan 4, 2019 in Java by Daisy
 • 8,120 points • 2,211 views
0 votes
0 answers

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 exception

I am getting the error java.lang.IndexOutOfBoundsException: Index: ...READ MORE

May 17, 2022 in Java by Kichu
 • 19,050 points • 2,208 views
0 votes
1 answer

simple HTTP server in Java using only Java SE API

The com.sun.net.httpserver solution is not portable across JREs. Its ...READ MORE

Jan 4, 2019 in Java by Daisy
 • 8,120 points • 2,196 views
0 votes
1 answer

How do I make a list with checkboxes in Java Swing?

Hii @kartik, Create a custom ListCellRenderer and asign it to ...READ MORE

May 8, 2020 in Java by Niroj
 • 82,880 points • 2,186 views
0 votes
1 answer

How to add items in list at a time?

Hi Priyanka , I think this code snippet ...READ MORE

Aug 9, 2019 in Java by sampriti
 • 1,120 points • 2,185 views
0 votes
1 answer

Lazy Initialization Error in Java

What is wrong here is that your ...READ MORE

Jan 14, 2019 in Java by developer_1
 • 3,320 points • 2,184 views
0 votes
1 answer

Join array elements with a separator in Java

Using Java 8, you can easily perform ...READ MORE

Aug 16, 2018 in Java by geek.erkami
 • 2,680 points • 2,181 views
0 votes
3 answers

How to read a Text File in Java?

You can use readAllLines and the join method to ...READ MORE

Jul 28, 2018 in Java by samarth295
 • 2,220 points • 2,170 views
0 votes
1 answer

How can we split a comma separated String in Java?

String str = "..."; // write the ...READ MORE

Jun 12, 2018 in Java by Parth
 • 4,630 points • 2,169 views
0 votes
2 answers

How to convert an int array to string using tostring method in java?

Use java.util.Arrays: String res = Arrays.toString(array); System. ...READ MORE

Aug 16, 2019 in Java by Sirajul
 • 59,230 points • 2,167 views
0 votes
1 answer

Reading data from excel , few cell values have double quotes. How to include the double quotes while reading

Hi, @Jyra, You can use one Java function ...READ MORE

May 7, 2020 in Java by Gitika
 • 65,910 points • 2,155 views
+1 vote
1 answer

Multithreading in Java with priorities

HI, @Juan, By default, a thread inherits the priority of its parent thread. ...READ MORE

Nov 6, 2020 in Java by Gitika
 • 65,910 points • 2,153 views
0 votes
2 answers

What is the meaning of purpose of this command: java -jar <some jar file>.jar ?

JAR (Java Archive) file is a package file ...READ MORE

Mar 22, 2019 in Java by Omkar
 • 69,230 points • 2,145 views
0 votes
0 answers

java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver

I am getting this exception when I ...READ MORE

May 7, 2022 in Java by narikkadan
 • 63,700 points • 2,135 views
0 votes
1 answer

Is it possible to create a memory leak with Java

Here's a good way to create a memory ...READ MORE

May 31, 2018 in Java by Parth
 • 4,630 points • 2,123 views
0 votes
1 answer

Xml to Json Conversion

To convert XML File in to JSON ...READ MORE

Jan 10, 2019 in Java by developer_1
 • 3,320 points • 2,111 views
0 votes
1 answer

How to install Java 8 on Mac

Oracle has a poor record for making ...READ MORE

Dec 23, 2020 in Java by Gitika
 • 65,910 points • 2,110 views
0 votes
1 answer

How to pad an integer with zeros on the left in Java?

Use java.lang.String.format() method. String.format("%05d", number ...READ MORE

May 31, 2018 in Java by Daisy
 • 8,120 points • 2,109 views
0 votes
1 answer

How to add local jar files to a Maven project?

Hello @kartik, You can add local dependencies directly ...READ MORE

Jul 28, 2020 in Java by Niroj
 • 82,880 points • 2,106 views
0 votes
1 answer

how to get cache memory size of a application in android

To find the size of the cache ...READ MORE

Sep 4, 2020 in Java by Rajiv
 • 8,910 points • 2,095 views
0 votes
1 answer

Where do we get the maven dependency code for Spring Beans?

Don't worry, you can just go through ...READ MORE

Jan 9, 2019 in Java by Frankie
 • 9,830 points • 2,087 views
0 votes
1 answer

Can anyone help me i have been struggling for weeks now to solve this problem

Hello, @Tafadzwa, Any way just navigate to C:\Users\user.gradle\caches\ ...READ MORE

Dec 24, 2020 in Java by Gitika
 • 65,910 points • 2,082 views
0 votes
1 answer

how to compare two words in java?

hey,  I think in your code the function ...READ MORE

Aug 8, 2019 in Java by sampriti
 • 1,120 points
edited Aug 8, 2019 by Kalgi • 2,079 views
+1 vote
2 answers

Is there a code to find 64-bit JVM or 32-bit JVM (from within a program)?

Do I need to understand the difference ...READ MORE

Jun 11, 2019 in Java by Jim
 • 810 points • 2,058 views
0 votes
1 answer

How to set AUTO-SCROLLING of JTextArea in Java GUI?

Hii kartik, When you click anywhere over JTextArea, ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 2,053 views
0 votes
1 answer

How can we override back button to act like home button?

Most of the time you need to ...READ MORE

Dec 14, 2018 in Java by Daisy
 • 8,120 points • 2,053 views
0 votes
1 answer

JSON formatter in C#?

 In order to do the needful, one ...READ MORE

Feb 8, 2022 in Java by Rahul
 • 9,670 points • 2,050 views
0 votes
0 answers

Javascript remove background color and opacity

How can I delete the background-color  ...READ MORE

Dec 6, 2022 in Java by Nicholas
 • 7,760 points • 2,039 views
0 votes
1 answer

Concept of Shadowing in Java

Entities (packages, types, methods, variables, etc.) defined ...READ MORE

Feb 8, 2019 in Java by developer_1
 • 3,320 points • 2,036 views
0 votes
1 answer

Should a class file always be inside package for importing it in jsp page?

Hey there! It is not necessary for the ...READ MORE

May 24, 2019 in Java by Karan
 • 2,011 views
0 votes
1 answer

How to resolve the java.net.ConnectException in Java?

If you are getting java.net.ConnectionException, it means ...READ MORE

Jun 4, 2018 in Java by Akrati
 • 3,190 points • 2,004 views
0 votes
3 answers

How to convert File to Byte[] in Java?

import java.io.File; import java.nio.file.Files; File file; // ...(file is initialised)... byte[] ...READ MORE

Aug 15, 2018 in Java by samarth295
 • 2,220 points • 1,984 views
0 votes
1 answer

How to read all files in a folder from Java?

public void listFilesForFolder(final File folder) { ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points • 1,982 views
0 votes
1 answer

Multiple return statements in Java

Yes, you have guessed it right. Language ...READ MORE

Jun 28, 2018 in Java by geek.erkami
 • 2,680 points • 1,981 views
0 votes
0 answers

How to round up integer division and have int result in Java?

I am working on a code to ...READ MORE

May 5, 2022 in Java by Kichu
 • 19,050 points • 1,979 views
0 votes
1 answer

How to convert a date string to a DateTime object using Joda Time library?

DateTimeFormatter formatter = DateTimeFormat.forPattern("dd/MM/yyyy HH:mm:ss"); DateTime dt = ...READ MORE

Jan 9, 2019 in Java by Daisy
 • 8,120 points • 1,978 views
0 votes
1 answer

Sorting an ArrayList in Java

You can easily do this by simply ...READ MORE

May 5, 2018 in Java by geek.erkami
 • 2,680 points • 1,976 views
0 votes
1 answer

What is the differnece between public static void main string args[] and psvm string []args ?

Before getting to this you should understand ...READ MORE

Nov 20, 2018 in Java by Nabarupa
 • 1,975 views
0 votes
1 answer

Maximum depth of the java call stack

Well, there is no definite depth. It ...READ MORE

Jul 24, 2018 in Java by code.reaper12
 • 3,500 points • 1,963 views
+1 vote
1 answer

What are REST clients for Java?

These are the few options : Apache CXF has ...READ MORE

Nov 22, 2018 in Java by Frankie
 • 9,830 points • 1,961 views
0 votes
3 answers

How does the “final” keyword in Java work?

Final is a keyword that is used to ...READ MORE

Sep 1, 2019 in Java by DEEPAK KUMAR GUPTA
 • 1,946 views
0 votes
2 answers

How can I convert a String variable to a primitive int in Java

 Here are two ways illustrating this: Integer x ...READ MORE

Aug 20, 2019 in Java by Sirajul
 • 59,230 points • 1,945 views
0 votes
2 answers

Get all the permutations of a string in Java

You could use recursion to do this.  Try ...READ MORE

Aug 21, 2019 in Java by Sirajul
 • 59,230 points • 1,940 views
0 votes
1 answer

How can a war file be deployed in Tomcat 7?

You can access your application from: http://localhost:8080/sample Deploying ...READ MORE

Apr 20, 2018 in Java by sophia
 • 1,400 points • 1,938 views
0 votes
1 answer

Java and MySql: Delete database if exists

First, you have to check if the ...READ MORE

Sep 30, 2019 in Java by Kiran
 • 1,936 views
0 votes
1 answer

What is definition of an invalid literal?

Hi, @ Stephen, I will explain to you ...READ MORE

Apr 20, 2020 in Java by Gitika
 • 65,910 points • 1,934 views
0 votes
1 answer

Why the main() method in Java is always static?

As you might know, static here is ...READ MORE

May 9, 2018 in Java by geek.erkami
 • 2,680 points • 1,922 views
–1 vote
0 answers

Write a program that uses a while loop to read 10 integer numbers from file

Write a program that uses a while ...READ MORE

Apr 16, 2020 in Java by MIH
 • 150 points • 1,915 views
0 votes
2 answers

How do I get distinct element from list in java?

You should use a Set. it doesn't contain duplicates. If ...READ MORE

Aug 23, 2019 in Java by Sirajul
 • 59,230 points • 1,910 views
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