Trending questions in Java

0 votes
1 answer

Is there a way to mask the password from java user input that comes from Scanner class and System.out.Println()?

You can use the console class to do so. ...READ MORE

May 27, 2019 in Java by Omkar
 • 69,180 points • 12,523 views
+1 vote
0 answers

getting below error when trying to conver csv file to json :The method readerFor(Class<Map>) is undefined for the type CsvMapper [closed]

PFB source code: import java.io.File; import java.lang.*; import java.util.Arrays; import java.util.List; import ...READ MORE

Dec 29, 2019 in Java by anonymous
 • 160 points
closed Jan 14, 2020 by Kalgi • 3,109 views
0 votes
1 answer

Concern and cross-cutting concern in Spring AOP

The concern is the behavior we want ...READ MORE

Nov 16, 2018 in Java by code.reaper12
 • 3,500 points
edited Mar 4, 2022 by Sarfaraz • 20,695 views
+2 votes
1 answer

please someone tell the code to launch an instance in digital ocean using java

In order to create a digital ocean ...READ MORE

Jan 14, 2020 in Java by Sirajul
 • 59,190 points • 2,275 views
+1 vote
1 answer

Is Java a compiled language or interpreted?

Compiled languages are directly converted into machine ...READ MORE

Dec 18, 2019 in Java by Hannah
 • 18,520 points • 3,013 views
+1 vote
2 answers

Non-static variable cannot be referenced from a static context. Explain?

class Program { int count ...READ MORE

Sep 28, 2019 in Java by anonymous
 • 16,852 views
0 votes
2 answers

Unable to execute jar- file: “no main manifest attribute”

Check out the answer here. READ MORE

Apr 23, 2020 in Java by Anonymous
 • 5,173 views
+2 votes
0 answers

How to add external Jar in modular JavaFX 11 project correctly?

I'm using Java 11 and JavaFX 11. ...READ MORE

Aug 8, 2019 in Java by invzbl3
 • 8,389 views
0 votes
2 answers

Splitting a string between letters and digits

Using Python READ MORE

Sep 17, 2020 in Java by Himanshu
 • 5,496 views
+1 vote
1 answer

Setting selected item of Spinner by value rather than by position

Suppose your Spinner is named newSpinner, and it contains ...READ MORE

Aug 10, 2018 in Java by 93.lynn
 • 1,600 points • 23,456 views
0 votes
2 answers

What are the different types of constructor in StringBuilder class?

StringBuilder  we 4  as mentioned below. READ MORE

Sep 1, 2020 in Java by Sri
 • 3,190 points • 2,687 views
+1 vote
1 answer

how to print this statement in java print(' '*(r-x-1)+'*'*(2*x+1)) ( logic used in python .its perfect) but java wrong output came

In ' '*(r-x-1) and '*'*(2*x+1), you used multiplication ...READ MORE

Dec 22, 2019 in Java by Utsab Bandyopadhyay
 • 2,088 views
0 votes
1 answer

Switch JPanels inside a JFrame

Instead of trying to add an remove ...READ MORE

Feb 14, 2019 in Java by developer_1
 • 3,350 points • 15,168 views
0 votes
1 answer

Java and MySql: Check if database exists

You can get the list of databases ...READ MORE

Aug 27, 2019 in Java by Kunal
 • 6,323 views
0 votes
2 answers

How do I get the size of a java.sql.ResultSet?

You could probably do rows-count. ResultSet rs = ...READ MORE

Aug 22, 2019 in Java by Sirajul
 • 59,190 points • 15,173 views
+1 vote
1 answer

How to create database in MySql using Java?

First, you will have to create connection ...READ MORE

Sep 30, 2019 in Java by Shri
 • 4,490 views
0 votes
0 answers

java regex split string into double numbers and-letters

I am having a problem splitting something ...READ MORE

Nov 14, 2019 in Java by khs
 • 120 points • 2,525 views
0 votes
1 answer

What is the difference between main(String[] args) and main(String... args) in Java?

String[] is used to accept a single parameter ...READ MORE

Sep 6, 2019 in Java by Piya
 • 5,443 views
0 votes
1 answer

Retrieving query from java.sql.PreparedStatement

By using prepared statements, you can't retrieve the query ...READ MORE

Oct 12, 2018 in Java by code.reaper12
 • 3,500 points • 19,486 views
0 votes
1 answer

Java and MySql: Check if database exists

You can get the list of databases ...READ MORE

Sep 30, 2019 in Java by Tina
 • 4,026 views
+1 vote
1 answer

Facing "Unresolved compilation problem : Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\ )" error when trying to launch firefox from selenium. Can anyone please help me

I think the problem is with this ...READ MORE

Jul 26, 2019 in Java by Venu
 • 6,561 views
0 votes
2 answers

Include all the jars in a directory within the Java classpath

Just use lib/*   not lib/*.jar   That's the ...READ MORE

Apr 6, 2019 in Java by anonymous
 • 18,034 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
 • 3,495 views
0 votes
2 answers

Please explain me the difference between scanner and the buffer reader?

As per your question for reading a ...READ MORE

Aug 27, 2019 in Java by Sirajul
 • 59,190 points • 5,351 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
 • 4,350 views
0 votes
0 answers

pass datasource for job to AWS Glue client in JAVA

How can i mention datasource for AWS ...READ MORE

Nov 10, 2019 in Java by cheshta
 • 120 points • 1,518 views
0 votes
1 answer

What is Eclipse Clean Mode ?

What it does: if set to "true", any ...READ MORE

Jan 11, 2019 in Java by developer_1
 • 3,350 points • 14,333 views
0 votes
1 answer

"No mapping found for HTTP request with URI[....] in DispatherServlet"

Your standard Spring MVC application will serve ...READ MORE

Jun 6, 2018 in Java by prasad
 • 160 points • 23,616 views
0 votes
0 answers

How to run python script in java [closed]

Aug 22, 2019 in Java by anonymous
closed Aug 22, 2019 by Omkar • 4,366 views
+1 vote
2 answers

Factorial of a number using while loop

import java.util.*; public class Fact { ...READ MORE

Mar 19, 2020 in Java by leela
 • 140 points • 5,535 views
0 votes
1 answer

How to connect Java to MySql Database?

Make sure you have the MySQL jdbc ...READ MORE

Sep 30, 2019 in Java by Shyam
 • 2,529 views
+1 vote
0 answers

output occurs but invisible immediately how to rectify this ?

public class evenodd { public static void main(String[] ...READ MORE

Oct 17, 2019 in Java by BIPLAB
 • 130 points • 1,733 views
0 votes
1 answer

Integrate UTF-8 encoding in Java WebApp

Mostly characters äåö are not a problematic ...READ MORE

Dec 12, 2018 in Java by Sushmita
 • 6,920 points • 14,976 views
0 votes
1 answer

Abstract class provides partial abstraction. How?

An Abstract class in java may have ...READ MORE

Jun 25, 2019 in Java by Sirajul
 • 59,190 points • 6,327 views
+1 vote
1 answer

How can I solve this example in an easy way??

You can use this code: import java.util.*; public class ...READ MORE

Sep 23, 2019 in Java by Omkar
 • 69,180 points • 1,908 views
0 votes
1 answer

Accessing Json array with Java

An org.json.JSONArray is not iterable. Here's how I process elements ...READ MORE

Jan 22, 2019 in Java by developer_1
 • 3,350 points • 12,421 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
 • 59,190 points • 3,468 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 • 3,676 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 • 3,672 views
0 votes
2 answers

How to return multiple objects from a Java method?

In the event the method you're calling ...READ MORE

Aug 30, 2019 in Java by Karan
 • 19,550 points • 11,480 views
0 votes
1 answer

How to encode the HTTP URL address in Java?

Use one of the constructors with more ...READ MORE

Oct 23, 2018 in Java by Sushmita
 • 6,920 points • 15,931 views
0 votes
1 answer

@Component vs @Controller vs @Repository vs @Service annotations in Spring Framework

@Component: This marks a java class as a bean. ...READ MORE

Nov 28, 2018 in Java by code.reaper12
 • 3,500 points • 14,295 views
0 votes
1 answer

How to get text from text box in Swing?

You can add a Button listener here. ...READ MORE

Aug 27, 2019 in Java by Jishan
 • 2,462 views
0 votes
1 answer

How to set margins in a LinearLayout programmatically?

LinearLayout ll = new LinearLayout(this); ll.setOrientation(LinearLayout.VERTICAL); LinearLayout.LayoutParams layoutParams = ...READ MORE

Dec 20, 2018 in Java by Daisy
 • 8,140 points • 13,214 views
0 votes
1 answer

Handling empty input in swing text box

login_but.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ //System.out.print(F_user.getText()); String username ...READ MORE

Aug 27, 2019 in Java by Nila
 • 2,290 views
0 votes
1 answer

Create Buttons in Java Swing

First, you will have to create a ...READ MORE

Aug 27, 2019 in Java by Esha
 • 2,260 views
0 votes
2 answers

Java Security: Illegal key size or default parameters

Starting from Java 9 or 8u151, you ...READ MORE

Aug 23, 2018 in Java by Parth
 • 4,640 points • 10,282 views
0 votes
1 answer

Swing Java create Text Box

In the frame, you can use the ...READ MORE

Aug 27, 2019 in Java by Kyle
 • 2,224 views
0 votes
1 answer

How to connect Java to MySql Database?

This will work: try { ...READ MORE

Aug 27, 2019 in Java by John
 • 2,188 views
0 votes
1 answer

How do I implement a HttpURLConnection using a Proxy ?

Since java 1.5 you can also pass ...READ MORE

Dec 10, 2018 in Java by Sushmita
 • 6,920 points • 13,403 views
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