Trending questions in Java

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What do you mean by aggregation in Java?

Aggregation is a specialized form of Association ...READ MORE

Feb 17, 2019 in Java by Frankie
• 9,810 points
151 views
0 votes
0 answers

What is the difference between Default and Protected access specifiers?

Can anyone explain in brief as what ...READ MORE

Feb 6, 2019 in Java by Dishantu
596 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
• 59,030 points
1,044 views
0 votes
2 answers

Fetch list of in-between dates using Java

java.time Package The new java.time.package in Java 8 incorporates ...READ MORE

Aug 21, 2019 in Java by Sirajul
• 59,030 points
2,152 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
• 59,030 points
700 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
7,102 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
• 3,310 points
1,660 views
0 votes
0 answers

how to solve thread-cannot find symbol

Feb 11, 2019 in Java by anonymous
316 views
0 votes
1 answer

Architecture mismatch between driver and application

None of these did it for me. ...READ MORE

Feb 6, 2019 in Java by developer_1
• 3,310 points
477 views
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
• 59,030 points
1,597 views
0 votes
1 answer

Aligning Diagram in Java

Without any evidence otherwise, I'd guess you've over-ridden the paint method ...READ MORE

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

Why are you not able to declare a class as static in Java?

A static keyword  can be used with ...READ MORE

Jun 11, 2019 in Java by Neha
• 330 points
293 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
• 6,890 points
1,463 views
0 votes
2 answers

What is the easiest way to iterate through the characters of a string in Java?

There are two approaches to this: for(int i ...READ MORE

Aug 19, 2019 in Java by Sirajul
• 59,030 points
508 views
0 votes
1 answer

Why Object is Super Class in Java?

Object is an exception to the first rule, ...READ MORE

Feb 7, 2019 in Java by Dheeraj
133 views
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2 answers

How to convert an int array to string using tostring method in java?

Use java.util.Arrays: String res = Arrays.toString(array); System. ...READ MORE

Aug 16, 2019 in Java by Sirajul
• 59,030 points
1,255 views
0 votes
1 answer

How is inheritance in C++ different than that in Java?

The purpose of inheritance is same for ...READ MORE

Feb 6, 2019 in Java by Priyaj
• 58,100 points
174 views
0 votes
1 answer

What is @ModelAttribute in Spring MVC?

@ModelAttribute refers to a property of the ...READ MORE

Dec 18, 2018 in Java by Daisy
• 8,110 points
2,246 views
0 votes
2 answers

How to convert byte array to String and STring to byte array?

The best possible way of conversion between byte[] and String is to ...READ MORE

Aug 22, 2019 in Java by Sirajul
• 59,030 points
1,578 views
0 votes
1 answer

USing Java App to create Windows Service

Apache Commons Daemon is a good alternative. It ...READ MORE

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

String related Hash Functions

Usually hashes wouldn't do sums, otherwise stop and pots will have ...READ MORE

Feb 5, 2019 in Java by developer_1
• 3,310 points
112 views
0 votes
1 answer

String mapping without Case-Sensitivity

Yes, contains is case sensitive. You can ...READ MORE

Feb 5, 2019 in Java by developer_1
• 3,310 points
108 views
0 votes
1 answer

“Unable to load native-hadoop library for your platform” warning: How to resolve it?

If you are running Hadoop on 64bit CentOS, ...READ MORE

Jan 4, 2019 in Java by Daisy
• 8,110 points
1,483 views
0 votes
2 answers

Unfortunately MyApp has stopped. How do I solve this?

The common solution for solving App has ...READ MORE

Mar 6, 2019 in Java by AllisonE
• 180 points
287 views
0 votes
1 answer

Use annotation for excluding specific fields from serialization

Simply mark the desired fields with the ...READ MORE

Feb 1, 2019 in Java by developer_1
• 3,310 points
238 views
0 votes
2 answers

Is there any way to declare an array in-line?

Another way to do that, if you ...READ MORE

Aug 30, 2019 in Java by Sirajul
• 59,030 points
97 views
0 votes
2 answers

How do I convert an input stream into a byte array

You could probably try this if you ...READ MORE

Aug 29, 2019 in Java by Sirajul
• 59,030 points
1,736 views
0 votes
1 answer

Xml to Json Conversion

To convert XML File in to JSON ...READ MORE

Jan 10, 2019 in Java by developer_1
• 3,310 points
1,136 views
0 votes
1 answer

Lazy Initialization Error in Java

What is wrong here is that your ...READ MORE

Jan 14, 2019 in Java by developer_1
• 3,310 points
926 views
0 votes
2 answers

How can we convert java.util.Date to java.sql.date in Java?

It's easy to convert a java.util.Date object ...READ MORE

Aug 27, 2019 in Java by Sirajul
• 59,030 points
306 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
• 8,110 points
1,087 views
0 votes
1 answer

simple HTTP server in Java using only Java SE API

The com.sun.net.httpserver solution is not portable across JREs. Its ...READ MORE

Jan 4, 2019 in Java by Daisy
• 8,110 points
1,288 views
0 votes
1 answer

Under what conditions is a JSESSIONID created?

JSESSIONID cookie is created/sent when session is ...READ MORE

Dec 18, 2018 in Java by Daisy
• 8,110 points
2,008 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 26, 2018 in Java by code.reaper12
• 3,500 points
5,535 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
7,405 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
• 6,890 points
9,475 views
0 votes
1 answer

Unable to find valid certification path to requested target - error even after cert imported

Unfortunately - it could be many things ...READ MORE

Nov 27, 2018 in Java by Daisy
• 8,110 points
2,802 views
0 votes
1 answer

Which is faster amongst an Array and an ArrayList?

Array Over List: The capacity of an Array is fixed.  Whereas ArrayList can ...READ MORE

Jul 20, 2018 in Java by sophia
• 1,400 points
8,415 views
0 votes
1 answer

Types of IOC containers in Spring Framework

There are basically two types of IOC ...READ MORE

Aug 27, 2018 in Java by misc.edu04
• 1,440 points
6,740 views
0 votes
1 answer

How to build jars from IntelliJ properly?

How to build a jar with IntelliJ ...READ MORE

Oct 12, 2018 in Java by sharth
• 3,350 points
4,766 views
0 votes
1 answer

How can we run eclipse in clean mode? and what will happen if we do so?

if set to "true", any cached data ...READ MORE

Jan 11, 2019 in Java by Daisy
• 8,110 points
831 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
• 59,030 points
1,247 views
0 votes
0 answers

How execute JSP web page in Intellij

Hi all, I am new to java and ...READ MORE

Jan 24, 2019 in Java by Abraham
• 120 points
220 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 to give ...READ MORE

Dec 3, 2018 in Java by Frankie
• 9,810 points
2,393 views
0 votes
2 answers

How to convert a java string into byte array

Try using String.getBytes(). It returns a byte[] ...READ MORE

Aug 22, 2019 in Java by Sirajul
• 59,030 points
270 views
0 votes
2 answers

how to increase heap size in java?

Here is how you can increase the ...READ MORE

Aug 23, 2019 in Java by Sirajul
• 59,030 points
728 views
+1 vote
1 answer

Error: JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = -2

Hello @Jino, It is just a JVM bug ...READ MORE

Nov 21, 2018 in Java by Nabarupa
2,860 views
0 votes
1 answer

Getting error 404 not found when trying to download JDK

Try this command, it should work: wget --no-check-certificate ...READ MORE

Dec 26, 2018 in Java by Omkar
• 69,110 points
1,345 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
• 8,110 points
3,880 views
0 votes
1 answer

Importing classes in JSP

Use Page Directive to import a Class ...READ MORE

May 25, 2018 in Java by Rishabh
• 3,640 points
10,443 views