Most viewed questions in Java

0 votes
2 answers

How can I convert byte array into hex string in Java?

public static String byteArrayToHex(byte[] a) { ...READ MORE

Aug 29, 2019 in Java by Sirajul
 • 59,230 points • 2,629 views
+1 vote
1 answer

How to calculate days between two dates?

You are making some conversions with your ...READ MORE

Aug 28, 2018 in Java by Frankie
 • 9,830 points • 2,626 views
0 votes
1 answer

How to read text files from the Classpath in Java?

InputStream in = this.getClass().getClassLoader().getResourceAsStream("TextFile.txt"); InputStream in = this.getClass().getResourceAsStream("/TextFile.txt"); package ...READ MORE

May 8, 2018 in Java by Akrati
 • 3,190 points • 2,621 views
0 votes
2 answers

How can I create File and write data in it using Java?

import java.io.BufferedWriter; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; public class WriteFiles{ ...READ MORE

Jul 26, 2018 in Java by samarth295
 • 2,220 points • 2,615 views
0 votes
1 answer

How to use an existing database with an Android application?

Hello @kartik, If you are having pre built ...READ MORE

Jul 28, 2020 in Java by Niroj
 • 82,880 points • 2,574 views
0 votes
0 answers

Is hiding implementation detail Encapsulation or Abstraction?

I have seen some people defining abstraction ...READ MORE

May 6, 2022 in Java by narikkadan
 • 63,700 points • 2,569 views
0 votes
2 answers

Converting between java.time.LocalDateTime and java.util.Date

Try this: Date in = new Date(); LocalDateTime ldt ...READ MORE

Aug 27, 2019 in Java by Sirajul
 • 59,230 points • 2,569 views
0 votes
0 answers

Error: The processing instruction target matching "[xX][mM][lL]" is not allowed

An error occurs when I run I ...READ MORE

May 23, 2022 in Java by Kichu
 • 19,050 points • 2,568 views
+1 vote
1 answer

Adding Jar file to project

Changing the JRE System Library might work.  Right-click ...READ MORE

Sep 4, 2019 in Java by Esha
 • 2,561 views
0 votes
1 answer

Injecting property value into Spring Bean using annotations

I think you can easily perform this ...READ MORE

May 29, 2018 in Java by code.reaper12
 • 3,500 points • 2,542 views
0 votes
1 answer

How to install Maven artifact with sources from command line?

Hello @kartik, To download sources for your dependencies: mvn ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,880 points • 2,519 views
0 votes
1 answer

Google Conversions Not Working - Script Won't Load

To give you a suggestion, you will ...READ MORE

Feb 10, 2022 in Java by Soham
 • 9,700 points • 2,517 views
0 votes
1 answer

If The A Class Is Declared Without Any Access Modifiers, Where May The Class Be Accessed In Java Programming?

A class that is declared without any ...READ MORE

Nov 28, 2018 in Java by Frankie
 • 9,830 points • 2,507 views
0 votes
1 answer

How to retrieve column names from java.sql.ResultSet?

You may refer the below code: ResultSet ...READ MORE

Jul 4, 2018 in Java by sophia
 • 1,400 points • 2,496 views
0 votes
2 answers

How to concatenate two arrays in Java?

public <T> T[] concatenate(T[] a, T[] b) ...READ MORE

Jul 19, 2018 in Java by Sushmita
 • 6,910 points • 2,472 views
0 votes
1 answer

Behavior of Integer Wrapper class and == operator

Well, this is happening because of the ...READ MORE

Jun 7, 2018 in Java by v.liyyah
 • 1,300 points • 2,468 views
0 votes
1 answer

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: How to handle this exception?

You have a com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure java.net.ConnectException: ...READ MORE

Oct 8, 2018 in Java by Parth
 • 4,630 points • 2,441 views
0 votes
2 answers

How do I get the current date and time using Java?

If you require a time stamp in ...READ MORE

Aug 23, 2019 in Java by Sirajul
 • 59,230 points • 2,431 views
+2 votes
1 answer

How to import an existing x509 certificate and private key in Java keystore to use in SSL?

keytool does not provide such basic functionality ...READ MORE

Dec 19, 2018 in Java by Daisy
 • 8,120 points • 2,420 views
0 votes
2 answers

How can we remove an element from an array in Java?

You can use ArrayUtils class remove method which ...READ MORE

May 24, 2018 in Java by UshaK
 • 2,416 views
0 votes
1 answer

Is it possible to run a java program from command line on windows?How?

  Let's say your file is in C:\myprogram\ Run ...READ MORE

Apr 18, 2018 in Java by sophia
 • 1,400 points • 2,413 views
0 votes
1 answer

How to return JSON response from Flask view?

Hello, Pass the summary data to the jsonify function, which ...READ MORE

Nov 20, 2020 in Java by Niroj
 • 82,880 points • 2,408 views
0 votes
0 answers

Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 63 path $.data

Here i am using retrofit post request:- RequestBody ...READ MORE

Apr 24, 2020 in Java by anonymous
 • 120 points • 2,402 views
0 votes
1 answer

Calling SOAP web services on Android using JAVA

Android does not provide any sort of ...READ MORE

Jun 28, 2018 in Java by Sushmita
 • 6,910 points • 2,397 views
0 votes
1 answer

How can we handle the javax.net.ssl.SSLHandshakeException?

import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import java.io.OutputStream; // ...READ MORE

Oct 10, 2018 in Java by Daisy
 • 8,120 points • 2,385 views
0 votes
1 answer

How to convert .imm imacro file to php/java to run on web hosting

Hello, You can try the sample code below: iimPlay("Test.iim") When ...READ MORE

May 13, 2020 in Java by Niroj
 • 82,880 points • 2,378 views
0 votes
1 answer

What is integer boxing in java?

In Java the boxing range for any ...READ MORE

Mar 6, 2019 in Java by Avantika
 • 1,520 points • 2,376 views
0 votes
2 answers

Counting no of Occurrence of a particular character inside a string in Java

We can find out the no. of ...READ MORE

Sep 7, 2018 in Java by Sushmita
 • 6,910 points • 2,370 views
0 votes
1 answer

How to trigger a file download when clicking an HTML button or JavaScript

You can trigger a download with the ...READ MORE

Nov 7, 2022 in Java by Damonlang
 • 700 points • 2,364 views
0 votes
2 answers

Setting Proxy for JVM usage

JVM uses the proxy to make HTTP ...READ MORE

Aug 26, 2019 in Java by Sirajul
 • 59,230 points • 2,361 views
0 votes
3 answers

How to check if a String is numeric in Java?

Check if a string is numeric public class ...READ MORE

Dec 29, 2020 in Java by Carlos
 • 2,351 views
0 votes
1 answer

Vanilla JavaScript equivalent of jQuery's $.ready() - how to call a function when the page/DOM is ready for it

Use Internet Explorer 9 or later if you're using VANILLA pure JavaScript without jQuery. document.addEventListener("DOMContentLoaded", function(event) { // ...READ MORE

Nov 8, 2022 in Java by Damonlang
 • 700 points • 2,343 views
0 votes
1 answer

Formatting Double Value in Java

An alternative is to use String.format: double[] arr = ...READ MORE

May 15, 2018 in Java by Rishabh
 • 3,620 points • 2,341 views
0 votes
1 answer

What are the different types of database testing?

The 3 types of Database Testing are Structural ...READ MORE

May 9, 2019 in Java by Frankie
 • 9,830 points • 2,333 views
0 votes
1 answer

Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?

export JAVA_HOME="$(/usr/libexec/java_home -v 1.6)" or export JAVA_HOME="$(/usr/libexec/java_home -v 1.7)" or export ...READ MORE

Dec 4, 2018 in Java by Daisy
 • 8,120 points • 2,330 views
0 votes
0 answers

Editor does not contain a main type in Eclipse

I have 64-bit ubuntu where I downloaded ...READ MORE

May 19, 2022 in Java by Kichu
 • 19,050 points • 2,319 views
0 votes
1 answer

NoClassDefFoundError in Java

Can’t tell you the exact reason as ...READ MORE

May 25, 2018 in Java by v.liyyah
 • 1,300 points • 2,315 views
0 votes
2 answers

I'm getting following error, while i'm running code in windows xp service pack 3 with JDK 6 version.

Till you send the code, I would ...READ MORE

May 16, 2018 in Java by Meci Matt
 • 9,460 points • 2,310 views
0 votes
1 answer

javascript filter array multiple conditions

You can do like this var filter = ...READ MORE

Nov 8, 2022 in Java by Damonlang
 • 700 points • 2,307 views
0 votes
2 answers

What is the difference between Type List and type ArrayList in Java

By List, you actually tell, that your object ...READ MORE

Aug 28, 2019 in Java by Sirajul
 • 59,230 points • 2,306 views
0 votes
1 answer

Can i know where is java logs on centos 7?

Hey! Have you checked <user.home>/.java/deployment/log ? READ MORE

Oct 20, 2020 in Java by Kiya
 • 2,292 views
0 votes
1 answer

How to fix the error failed to load the JNI shared Library?

You need these three things : 64-bit OS 64-bit ...READ MORE

Apr 19, 2018 in Java by sophia
 • 1,400 points • 2,283 views
0 votes
2 answers

Generate an alpha-numeric string randomly

Java supplies a way of doing this ...READ MORE

Jul 18, 2018 in Java by Daisy
 • 8,120 points • 2,268 views
0 votes
1 answer

Calculate string value in javascript, not using eval

You could use the Function() constructor: function evil(fn) ...READ MORE

Nov 15, 2022 in Java by Damonlang
 • 1,230 points • 2,261 views
0 votes
1 answer

Uncaught referenceerror: $ is not defined

The references must be aligned or put ...READ MORE

Feb 8, 2022 in Java by Rahul
 • 9,670 points • 2,261 views
0 votes
1 answer

Difference between FetchType LAZY and EAGER in Java Persistence API?

Sometimes you have two entities and there's ...READ MORE

Dec 5, 2018 in Java by Daisy
 • 8,120 points • 2,261 views
0 votes
1 answer

Can't execute jar- file: “no main manifest attribute”

First, it's kind of weird, to see ...READ MORE

Dec 23, 2020 in Java by Gitika
 • 65,910 points • 2,249 views
0 votes
1 answer

How to get rid of TLE in Java?

The TLE (Time limit exceed) problem occurs ...READ MORE

Mar 5, 2019 in Java by Disha
 • 2,239 views
0 votes
1 answer

A Java collection of value pairs? (tuples?)

The Pair class is one of those ...READ MORE

Jul 2, 2018 in Java by sharth
 • 3,370 points • 2,235 views
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 • 2,222 views
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