Trending questions in Java

+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
 • 2,532 views
0 votes
1 answer

Which of them among ArrayList, LinkedList, and Vector is most efficient for adding and removing elements from the list?

Of the three, LinkedList is generally going ...READ MORE

Dec 3, 2018 in Java by Frankie
 • 9,830 points • 8,498 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 • 815 views
0 votes
1 answer

Deep copying a 2d array in Java

I guess, for deep copying you will ...READ MORE

Nov 13, 2018 in Java by code.reaper12
 • 3,500 points • 9,236 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
 • 8,140 points • 7,772 views
0 votes
1 answer

Access method without creating Object

This is not possible in java. You ...READ MORE

Feb 7, 2019 in Java by Dheeraj
 • 5,173 views
+1 vote
0 answers

How to install java on linux operating system?

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

May 16, 2019 in Java by Vicky
reopened Nov 15, 2024 by Neelam • 914 views
0 votes
3 answers

How can I add new elements to an Array in Java

String[] source = new String[] { "a", ...READ MORE

Sep 19, 2018 in Java by Sushmita
 • 6,920 points • 14,462 views
0 votes
1 answer

Interface variable are static and final by default. Why?

Interface variables are static because Java interfaces ...READ MORE

Jul 4, 2018 in Java by Daisy
 • 8,140 points • 14,543 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
 • 69,180 points • 3,160 views
0 votes
1 answer

Configuration metadata in Spring Framework

Configuration metadata can be provided to Spring container in ...READ MORE

Aug 3, 2018 in Java by code.reaper12
 • 3,500 points • 13,161 views
0 votes
3 answers

How does the “final” keyword in Java work?

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

Sep 1, 2019 in Java by DEEPAK KUMAR GUPTA
 • 3,168 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 6, 2019 in Java by developer_1
 • 3,350 points • 3,789 views
+2 votes
10 answers

Convert Java Byte Array - String - Byte Array

Character Stream Vs Byte Stream Character oriented are ...READ MORE

Sep 25, 2018 in Java by carldivin
 • 180 points • 11,460 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
 • 19,550 points • 3,887 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
 • 7,487 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
 • 58,020 points • 3,524 views
0 votes
1 answer

DTO vs VO vs POJO vs JavaBeans

Data Transfer Object is used for transferring a collection ...READ MORE

Aug 14, 2018 in Java by code.reaper12
 • 3,500 points
edited Oct 7, 2021 by Sarfaraz • 12,118 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
 • 3,350 points • 4,255 views
0 votes
2 answers

How can we add leading zeros to the number in Java?

From Java 1.5 you can use the String.format method. ...READ MORE

Aug 26, 2019 in Java by Sirajul
 • 59,190 points • 5,643 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
 • 59,190 points • 1,366 views
0 votes
1 answer

Autowired field pointing NULL in Spring

The field annotated @Autowired is null because ...READ MORE

Jun 6, 2018 in Java by Avi
 • 160 points
edited Mar 4, 2022 by Sarfaraz • 14,875 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 • 3,075 views
0 votes
1 answer

Java Client Certificate over HTTPS/SSL

The missing links was (mostly) the first ...READ MORE

Nov 28, 2018 in Java by Sushmita
 • 6,920 points • 7,218 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
 • 2,986 views
0 votes
1 answer

What are the advantages of Dynamic Polymorphism?

Advantages of Dynamic Polymorphism Dynamic Polymorphism allows Java ...READ MORE

Feb 1, 2019 in Java by Frankie
 • 9,830 points • 4,389 views
0 votes
2 answers

How can we add an image to a JPanel?

If you are using JPanels, then are ...READ MORE

Sep 20, 2018 in Java by Daisy
 • 8,140 points • 12,431 views
0 votes
1 answer

Received fatal alert: handshake_failure through SSLHandshakeException

On update 51, java 1.8 prohibited[1] RC4 ...READ MORE

Dec 5, 2018 in Java by Daisy
 • 8,140 points • 6,735 views
0 votes
1 answer

“Missing return statement” within if / for / while in Java

Putting a return statement in any of the ...READ MORE

Sep 27, 2018 in Java by code.reaper12
 • 3,500 points • 9,635 views
0 votes
1 answer

How to call a method from Constructor?

Have a glance at below steps: You create ...READ MORE

Nov 13, 2018 in Java by Frankie
 • 9,830 points • 7,558 views
0 votes
1 answer

Calling remove in foreach loop in Java

To safely remove from a collection while ...READ MORE

Sep 26, 2018 in Java by sharth
 • 3,370 points • 9,599 views
0 votes
2 answers

Result of character addition in Java

Binary arithmetic operations on char and byte ...READ MORE

Aug 22, 2019 in Java by Sirajul
 • 59,190 points • 5,325 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
 • 59,190 points • 1,463 views
0 votes
1 answer

HashMap with multiple values under the same key

Use a map that has a list ...READ MORE

Dec 13, 2018 in Java by Sushmita
 • 6,920 points • 5,969 views
0 votes
1 answer

Method for escaping HTML in Java

242 StringEscapeUtils from Apache Commons Lang: import static org.apache.commons.lang.StringEscapeUtils.escapeHtml; // ... String source ...READ MORE

Jan 9, 2019 in Java by developer_1
 • 3,350 points • 4,791 views
0 votes
1 answer

How to resolve 'Must Override a Superclass Method' Errors after importing a project into Eclipse ?

Eclipse is defaulting to Java 1.5 and ...READ MORE

Jan 10, 2019 in Java by developer_1
 • 3,350 points • 4,745 views
0 votes
1 answer

What is an Operand Stack in Java?

The basic utility of Operand Stack are ...READ MORE

Mar 7, 2019 in Java by Priyaj
 • 58,020 points • 2,336 views
0 votes
1 answer

Implementing mouseover() function in Selenium webdriver

This code works perfectly well: Actions builder ...READ MORE

Jan 22, 2019 in Java by developer_1
 • 3,350 points • 4,171 views
0 votes
1 answer

Find common element between two array.

You just need nested loop, that will ...READ MORE

Mar 11, 2019 in Java by Esha Gupta
 • 2,058 views
0 votes
1 answer

Eclipse java debugging: source not found

Eclipse debugging works with the class actually loaded by ...READ MORE

Oct 25, 2018 in Java by Daisy
 • 8,140 points • 7,956 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
 • 58,020 points • 1,235 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
 • 19,550 points • 1,530 views
0 votes
1 answer

How can we compare objects by multiple fields in Java?

You can implement a Comparator which compares two Person objects, and ...READ MORE

Jan 9, 2019 in Java by Daisy
 • 8,140 points • 4,566 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
 • 1,890 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
 • 59,190 points • 1,132 views
0 votes
2 answers

How to convert a byte into Hexadecimal in Java?

private static final String ...READ MORE

Aug 29, 2019 in Java by Sirajul
 • 59,190 points • 2,513 views
0 votes
2 answers

What are all the different ways to create an object in Java?

There are different ways you could do this ...READ MORE

Aug 19, 2019 in Java by Sirajul
 • 59,190 points • 1,519 views
+1 vote
1 answer

How can I find memory usage of my application in Android?

You can get memory info programmatically and ...READ MORE

Jan 10, 2019 in Java by Sushmita
 • 6,920 points • 4,374 views
0 votes
1 answer

How do I break out of nested loops in Java?

You can use break with a label for the ...READ MORE

Mar 13, 2019 in Java by trisha
 • 1,642 views
0 votes
1 answer

Java version mismatch

We get this error when we write ...READ MORE

Feb 21, 2019 in Java by Vaishnavi
 • 2,436 views
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