Trending questions in Java

0 votes
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Java and MySql: Delete database if exists

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

Aug 27, 2019 in Java by Varun
 • 1,058 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 • 12,812 views
0 votes
1 answer

How to create database in MySql using Java?

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

Aug 27, 2019 in Java by Juni
 • 1,021 views
+1 vote
0 answers

i open the spinner and can save document , but i am not able to save spinner information with my document in android, can u help?

Aug 28, 2019 in Java by DT
 • 130 points • 926 views
0 votes
1 answer

How to create password field in Swing?

Swing provides an object called JPasswordField for ...READ MORE

Aug 27, 2019 in Java by Bruce
 • 886 views
0 votes
1 answer

which maven dependency has to be added for MongoPreparedStatement in java 1.8

You need to define the dependency of a ...READ MORE

Jul 30, 2019 in Java by Sirajul
 • 59,190 points • 2,054 views
0 votes
1 answer

How to download Eclipse on a flash drive and use it on a public computer?

To use Eclipse from a flash drive, ...READ MORE

Apr 22, 2019 in Java by Omkar
 • 69,180 points • 6,253 views
0 votes
2 answers

What is a StackOverflow Error

stackoverflow error – StackOverflow Error in Java. This error is thrown to ...READ MORE

Aug 29, 2020 in Java by Pistle
 • 1,000 points • 2,709 views
0 votes
1 answer

Can you explain what is the difference between hashtable and hashmap?

Hi, Hashtable is synchronized, whereas HashMap is not. This makes HashMap better for ...READ MORE

Aug 15, 2019 in Java by anonymous
 • 1,052 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 • 11,466 views
0 votes
0 answers

Sending request using json object return 404 error code

I am getting mad with this code ...READ MORE

Jun 19, 2019 in Java by FooBayo
 • 120 points
edited Jun 19, 2019 by FooBayo • 3,210 views
0 votes
1 answer

How can I change my string into date directly?

Hi Priya, You check this code, import java.util.Date; import java.text.DateFormat; import ...READ MORE

Aug 10, 2019 in Java by sampriti
 • 1,120 points • 918 views
0 votes
1 answer

Can Enum implement Class

Enum is a type similar to that ...READ MORE

May 27, 2019 in Java by Sirajul
 • 59,190 points • 3,846 views
0 votes
1 answer

What do you mean by Socket Programming?

Socket programming is a way of connecting two ...READ MORE

Jul 14, 2019 in Java by Frankie
 • 9,830 points • 1,438 views
0 votes
1 answer

i am getting sessionnotcreatedexception in appium

Hi... it says here that Appium cannot ...READ MORE

Jun 27, 2019 in Java by ajs3033
 • 7,300 points • 2,230 views
+1 vote
0 answers

Initially autowired object has value,it becomes null after paging(using JSF 2.2 and spring 4.01.)

i'm trying to create basic crud operations ...READ MORE

Jul 5, 2019 in Java by swats
 • 1,843 views
0 votes
2 answers

Maximum size of an Java array

There are actually two limits.  The maximum element ...READ MORE

Aug 20, 2019 in Java by Sirajul
 • 59,190 points • 6,015 views
0 votes
1 answer

What is Comparable in Java?

As the name itself suggests, Comparable is an interface which defines ...READ MORE

Jul 15, 2019 in Java by Neha
 • 6,300 points • 1,228 views
0 votes
1 answer

Replace all 0's with 5 in Java

Take a look at this, hope this ...READ MORE

Mar 6, 2019 in Java by Priyaj
 • 58,020 points • 6,770 views
0 votes
1 answer

Multiple return types in Java

No, you don't have two return types.It's ...READ MORE

Feb 8, 2019 in Java by developer_1
 • 3,350 points • 7,877 views
0 votes
1 answer

3DES encryption/decryption in Java

Hey, its just that Base 64 encoding ...READ MORE

Nov 8, 2018 in Java by nirvana
 • 3,090 points • 11,802 views
0 votes
1 answer

What is Just in time compiler in Java?

The Just-In-Time compiler is one of the integral parts ...READ MORE

Jul 14, 2019 in Java by Frankie
 • 9,830 points • 1,042 views
0 votes
1 answer

Including dependencies in a jar with Maven

You can do this using the maven-assembly-plugin ...READ MORE

Jul 21, 2018 in Java by samarth295
 • 2,220 points • 16,542 views
0 votes
1 answer

How to include jars in classpath using command line?

I have tried the following and it's ...READ MORE

Jan 3, 2019 in Java by Daisy
 • 8,140 points • 9,219 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
 • 59,190 points • 3,324 views
0 votes
0 answers

Unable to launch any browsers as below mentioned errors are displaying. can anyone please help me

Jul 15, 2019 in Java by anonymous
 • 847 views
0 votes
1 answer

Java URL encoding of query string parameters

I would not use URLEncoder. Besides being incorrectly ...READ MORE

Jun 1, 2018 in Java by Rishabh
 • 3,620 points • 18,308 views
0 votes
2 answers

How to round a double to 2 decimal places?

double value = 200.3456; System.out.printf("Value: %.2f", value); You can ...READ MORE

Dec 11, 2018 in Java by Sushmita
 • 6,920 points • 14,867 views
0 votes
3 answers

How to rotate an array from a particular index?

private static void rotate(int[] arr, int order) ...READ MORE

Aug 29, 2019 in Java by Sirajul
 • 59,190 points • 2,451 views
+1 vote
1 answer

Can you please explain the difference between string, string buffer and string builder?

String are immutable where as StringBuffer and ...READ MORE

Jul 5, 2019 in Java by Akash
 • 160 points • 1,600 views
0 votes
1 answer

Converting ISO 8601-compliant String to java.util.Date

Unfortunately, the time zone formats available to SimpleDateFormat (Java ...READ MORE

Nov 27, 2018 in Java by Daisy
 • 8,140 points
edited Oct 7, 2021 by Sarfaraz • 10,294 views
0 votes
1 answer

How to parse invalid XML in Java ?

That "XML" is worse than invalid – it's not well-formed. An ...READ MORE

Mar 7, 2019 in Java by developer_1
 • 3,350 points • 5,919 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
 • 2,492 views
0 votes
2 answers

How do I read and convert an InputStream object to string type?

You can also use Java Standard Library ...READ MORE

Jul 17, 2018 in Java by Sushmita
 • 6,920 points • 17,835 views
0 votes
2 answers

What is the difference between implements and extends?

Extends : This is used to get attributes ...READ MORE

Aug 3, 2018 in Java by samarth295
 • 2,220 points • 17,340 views
0 votes
1 answer

How can I make my output float when my two integers are integer?

Hi Prapti , I got your doubt please check ...READ MORE

Jun 3, 2019 in Java by sampriti
 • 1,120 points • 1,701 views
0 votes
1 answer

Is there a way to instantiate abstract class ?

No, you are not creating the instance ...READ MORE

Dec 12, 2018 in Java by Sushmita
 • 6,920 points • 9,080 views
0 votes
2 answers

When to use Static Methods in Java?

A static method has two main purposes: For ...READ MORE

Aug 10, 2018 in Java by samarth295
 • 2,220 points • 16,611 views
+1 vote
1 answer

How to tell the Maven to use the latest version of dependency in Java?

If you always want to use the ...READ MORE

Jun 26, 2018 in Java by Sushmita
 • 6,920 points • 16,184 views
+1 vote
2 answers

What is coercion in Polymorphism?

Implicit type conversion is called coercion polymorphism. ...READ MORE

Jun 25, 2019 in Java by anonymous
 • 3,456 views
0 votes
2 answers

Why it is not possible to define a static method in a Java interface?

Interfaces are concerned with polymorphism which is ...READ MORE

Aug 27, 2019 in Java by Sirajul
 • 59,190 points • 2,551 views
0 votes
2 answers

Reverse an Array in Java

If you want to reverse the array ...READ MORE

Aug 28, 2019 in Java by Sirajul
 • 59,190 points • 1,165 views
0 votes
1 answer

How can I compare two integers properly?

Hi Divya, I hope this code snippet will ...READ MORE

May 31, 2019 in Java by sampriti
 • 1,120 points • 1,232 views
0 votes
1 answer

revalidate() vs repaint() in Java Swing

You need to call repaint() and revalidate() both in order ...READ MORE

Sep 20, 2018 in Java by code.reaper12
 • 3,500 points • 12,179 views
0 votes
1 answer

How to Iterate HashMap?

Hi Shashank. Please try this code I hope ...READ MORE

May 30, 2019 in Java by sampriti
 • 1,120 points • 1,162 views
0 votes
0 answers

AndroidManifest.xml:62: error: Error: No resource found that matches the given name (at 'value' with value '@integer/google_play_services_version').

May 28, 2019 in Java by anonymous
 • 1,305 views
0 votes
2 answers

How do we convert only the second letter of every word in a string to uppercase ?

The following code will perform your desired ...READ MORE

Aug 29, 2018 in Java by curious
 • 560 points • 12,764 views
0 votes
1 answer

Remove duplicates from an ArrayList in Java

Here is the function for doing this. // ...READ MORE

Mar 6, 2019 in Java by Heena
 • 4,617 views
0 votes
1 answer

How to set Encoding in Java ?

Unfortunately, the file.encoding property has to be specified as ...READ MORE

May 29, 2018 in Java by Rishabh
 • 3,620 points • 16,674 views
0 votes
2 answers

How can we add the local JAR files to the Maven Project in Java?

Firstly I would like to give credit ...READ MORE

Nov 5, 2018 in Java by Sushmita
 • 6,920 points • 13,092 views
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