Trending questions in Java

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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
• 59,050 points
1,125 views
0 votes
2 answers

how can we Create instance for generic type in java

private static class SomeContainer<E> { ...READ MORE

Aug 27, 2018 in Java by Sushmita
• 6,890 points
14,164 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
700 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
• 6,890 points
7,698 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
• 59,050 points
120 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
• 1,100 points
201 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
• 59,050 points
321 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
• 1,100 points
115 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
• 1,100 points
103 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
9,276 views
0 votes
0 answers

Where i have to put resource package so it's accessible by external jar in eclipse?

Servlet.init() for servlet [JERSEY] threw exception java.lang.ExceptionInInitializerError cause by ...READ MORE

May 29, 2019 in Java by anonymous

edited May 30, 2019 by Omkar 131 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
• 3,310 points
5,992 views
0 votes
2 answers

What is the difference between Set and List in java?

LIST SET Duplicates YES NO Order Ordered Depends on Implementation Positional Access YES NO List is an ordered sequence ...READ MORE

Aug 14, 2019 in Java by Sirajul
• 59,050 points
6,759 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
• 9,810 points
699 views
+1 vote
0 answers

How to install java on linux operating system? [closed]

I read good info about java here ...READ MORE

May 16, 2019 in Java by Vicky

closed May 16, 2019 by Vardhan 197 views
0 votes
1 answer

Switch JPanels inside a JFrame

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

Feb 13, 2019 in Java by developer_1
• 3,310 points
4,153 views
0 votes
1 answer

Concern and cross-cutting concern in Spring AOP

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

Nov 15, 2018 in Java by code.reaper12
• 3,500 points
7,844 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
• 59,050 points
356 views
0 votes
1 answer

Remove duplicates from an ArrayList in Java

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

Mar 5, 2019 in Java by Heena
2,828 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
1,027 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
• 6,890 points
11,311 views
0 votes
1 answer

How to parse invalid XML in Java ?

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

Mar 6, 2019 in Java by developer_1
• 3,310 points
2,695 views
0 votes
1 answer

does java support operator overloading?

Java doesn't supports operator overloading because it's just a ...READ MORE

Jun 18, 2018 in Java by Akrati
• 960 points
13,907 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
• 58,120 points
2,568 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
• 3,310 points
4,399 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
14,322 views
+1 vote
2 answers

How to use try & catch block in Java?

Hey @Jino, Using try catch block for your ...READ MORE

Dec 21, 2018 in Java by Nabarupa
211 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
• 8,110 points
4,793 views
0 votes
2 answers

How to iterate in a HashMap in Java?

Iterating using Iterator. Using Generics: Map<Integer, Integer> map = ...READ MORE

Aug 28, 2019 in Java by Sirajul
• 59,050 points
248 views
0 votes
3 answers

How autowiring works in Spring?

First, and most important - all Spring ...READ MORE

Jan 11, 2019 in Java by developer_1
• 3,310 points
4,204 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 27, 2018 in Java by code.reaper12
• 3,500 points
5,925 views
0 votes
1 answer

Start a Standalone Application in Java

You can make this work by calling start(...) directly on a ...READ MORE

Mar 5, 2019 in Java by developer_1
• 3,310 points
1,538 views
0 votes
2 answers

How to check if a string has only letters

You could probably use Java 8 lambda ...READ MORE

Aug 30, 2019 in Java by Karan
• 19,610 points
1,677 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
• 3,150 points
6,537 views
+1 vote
1 answer

What are the types of memory in JVM?

The different types of Memory in JVM ...READ MORE

Mar 7, 2019 in Java by Priyaj
• 58,120 points
1,375 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 21, 2019 in Java by Omkar
• 69,130 points
606 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
• 19,610 points
2,535 views
0 votes
1 answer

Mocking static methods with Mockito

@RunWith(PowerMockRunner.class) @PrepareForTest(DriverManager.class) public class Mocker { ...READ MORE

Dec 12, 2018 in Java by Daisy
• 8,110 points
4,854 views
0 votes
2 answers

Java: convert List<String> to a String

With a java 8 collector, this can ...READ MORE

Aug 30, 2019 in Java by Sirajul
• 59,050 points
196 views
0 votes
3 answers

How does the “final” keyword in Java work?

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

Aug 31, 2019 in Java by DEEPAK KUMAR GUPTA
526 views
0 votes
2 answers

How to move or copy a file in Java

The new JAVA Specification Request 203 -NIO will ...READ MORE

Aug 20, 2019 in Java by Sirajul
• 59,050 points
159 views
0 votes
2 answers

Give an example for encryption and decryption in AES using Java

getfullstring: Splashscreen.text >>> READ MORE

May 8, 2019 in Java by anonymous
4,954 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
• 8,110 points
5,367 views
0 votes
1 answer

Create fucntion to find GCD of two numbers

Hey @Diya, here is a code on how ...READ MORE

Mar 28, 2019 in Java by Priyaj
• 58,120 points
140 views
0 votes
1 answer

Dagger error in Java

What's going on? Have a good look at ...READ MORE

Feb 11, 2019 in Java by developer_1
• 3,310 points
2,036 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
998 views
0 votes
0 answers

Iterate over json and output multiple rows

I have a json in which multiple ...READ MORE

Mar 12, 2019 in Java by Yogesh
724 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
• 6,890 points
4,565 views
0 votes
2 answers

Reading an InputStream & coverting it into a String in Java?

Apache Commons allows: String myString = IOUtils.toString(myInputStream, "UTF-8"); And ...READ MORE

Aug 30, 2019 in Java by Karan
• 19,610 points
231 views