Trending questions in Java

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1 answer

Java version mismatch

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

Feb 21, 2019 in Java by Vaishnavi
 • 2,415 views
0 votes
1 answer

Write files to external public storage in Android

MediaStore has not discovered your newly-created files yet. ...READ MORE

Mar 1, 2019 in Java by developer_1
 • 3,350 points • 2,067 views
0 votes
1 answer

Count occurance of string in an array

You can use hashmap to solve this, ...READ MORE

Mar 7, 2019 in Java by Priyaj
 • 58,020 points • 1,794 views
0 votes
1 answer

Difference between Instance Variable and Class Variable

A variable defined within a block or ...READ MORE

Mar 12, 2019 in Java by Reema
 • 1,463 views
0 votes
1 answer

Install Java on Ubuntu

Hi @Anvi, to install Java on Ubuntu, ...READ MORE

Mar 1, 2019 in Java by Pratibha
 • 3,690 points • 1,891 views
0 votes
2 answers

String comparission in Java

You should use s1.equals(s2) instead of '==' ...READ MORE

Mar 14, 2019 in Java by anonymous
 • 1,346 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
 • 59,190 points • 3,040 views
0 votes
1 answer

First panel added to a frame disappears

The default layout of a JFrame (or more specifically ...READ MORE

Mar 1, 2019 in Java by developer_1
 • 3,350 points • 1,864 views
0 votes
1 answer

Concept of Shadowing in Java

Entities (packages, types, methods, variables, etc.) defined ...READ MORE

Feb 8, 2019 in Java by developer_1
 • 3,350 points • 2,768 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
 • 3,370 points • 7,918 views
0 votes
1 answer

Extend an array after initialization

Here is the method I came up ...READ MORE

Mar 11, 2019 in Java by Esha Gupta
 • 1,437 views
0 votes
0 answers

sir iam using 64 bit windows i write javA PROGRAM IN MY SYSTEM CMD SHOWS ERROR LIKE SOURCE FILES PLEASE GIE ME SUGGESTION

Mar 17, 2019 in Java by anonymous
 • 1,148 views
0 votes
1 answer

FirebaseListAdapter not pushing individual items for chat app

o let the FirebaseRecyclerAdapter and FirebaseListAdapter show ...READ MORE

Feb 14, 2019 in Java by developer_1
 • 3,350 points • 2,458 views
0 votes
1 answer

Merge two array in Java

This is very simple, you need an ...READ MORE

Mar 11, 2019 in Java by Esha Gupta
 • 1,317 views
+1 vote
1 answer

Convert CSV to JSON. JSON payload should be included in square brackets

The JSON payload uses a list and ...READ MORE

Aug 7, 2018 in Java by Omkar
 • 69,180 points • 10,664 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
 • 59,190 points • 3,196 views
0 votes
1 answer

SuppressWarnings (“unchecked”) in Java

@SuppressWarnings("unchecked") is used when Java generics just don't ...READ MORE

Sep 4, 2018 in Java by anto.trigg4
 • 3,440 points • 9,389 views
0 votes
1 answer

Http Basic Authentication in Java using HttpClient?

String encoding = Base64Encoder.encode ("test1:test1"); HttpPost httppost = ...READ MORE

Dec 20, 2018 in Java by Daisy
 • 8,140 points • 4,773 views
0 votes
2 answers

How to convert a JSON String into Object in Java?

You could probably check out Google's Gson: ...READ MORE

Aug 21, 2019 in Java by Sirajul
 • 59,190 points • 3,659 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
 • 59,190 points • 4,392 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
 • 59,190 points • 4,075 views
0 votes
1 answer

What are the different ways of comparing Strings in Java?

The different ways of comparing string in ...READ MORE

Mar 5, 2019 in Java by Wasim
 • 1,391 views
0 votes
1 answer

Arrays are passed by value or passed by reference in Java?

Arrays are not a primitive type in ...READ MORE

Jul 18, 2018 in Java by sophia
 • 1,400 points • 11,292 views
0 votes
1 answer

What is JNI?

Java native interface, it is an interface ...READ MORE

Mar 7, 2019 in Java by Priyaj
 • 58,020 points • 1,263 views
0 votes
1 answer

What is the difference between Polymorphism, Overriding and Overloading?

As far as I know, the main ...READ MORE

Jun 19, 2018 in Java by scarlett
 • 1,290 points • 12,512 views
0 votes
1 answer

Trusting all certificates using HttpClient over HTTPS

Note: Do not implement this in production ...READ MORE

Jun 25, 2018 in Java by Rishabh
 • 3,620 points • 12,246 views
0 votes
1 answer

Getting "Unsupported major.minor version" error.

I will recommend not to upgrade the ...READ MORE

Feb 22, 2019 in Java by Sapan
 • 1,783 views
0 votes
1 answer

How to install and configure JDK8 on Windows 10

Hey @Henna, Go to this page  Accept the license ...READ MORE

Feb 28, 2019 in Java by Kalgi
 • 1,485 views
0 votes
1 answer

finalize() called on strongly reachable object in Java 8

A bit of conjecture here. It is ...READ MORE

Mar 5, 2019 in Java by developer_1
 • 3,350 points • 1,199 views
0 votes
1 answer

How to Read/Write String from a File in Android

Writing a File in android: private void writeToFile(String ...READ MORE

Oct 3, 2018 in Java by sharth
 • 3,370 points • 7,790 views
0 votes
1 answer

How to run Unix shell script from Java code?

ProcessBuilder pb = new ProcessBuilder("myshellScript.sh", "myArg1", "myArg2"); ...READ MORE

Oct 26, 2018 in Java by Daisy
 • 8,140 points • 6,790 views
0 votes
1 answer

How to remove object from an Array?

Here is a code I came up ...READ MORE

Mar 11, 2019 in Java by Esha Gupta
 • 911 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
 • 8,140 points • 5,361 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
 • 59,190 points • 3,393 views
0 votes
1 answer

How to disable session in JSP?

<%@ page session=“false” %>    Using this above command, you can ...READ MORE

Feb 18, 2019 in Java by Frankie
 • 9,830 points • 1,741 views
0 votes
1 answer

What is the need to override the equals and hashCode methods in Java?

You must override hashCode() in every class ...READ MORE

Jan 2, 2019 in Java by Daisy
 • 8,140 points • 3,757 views
0 votes
1 answer

Xpath in Java for accessing OWL Document

Don't query RDF (or OWL) with XPath In ...READ MORE

Feb 28, 2019 in Java by developer_1
 • 3,350 points • 1,306 views
0 votes
1 answer

Need help with Java Installation

Hi @Ashmita, to asnwer your question, lets ...READ MORE

Feb 28, 2019 in Java by Pratibha
 • 3,690 points • 1,299 views
0 votes
2 answers

What is the use of @Override annotation in Java ? When do we use it ?

@Override annotation is used when we override ...READ MORE

Aug 14, 2019 in Java by Sirajul
 • 59,190 points • 4,060 views
0 votes
1 answer

What is composition in Java?

Composition is again specialized form of Aggregation ...READ MORE

Feb 18, 2019 in Java by Neha
 • 6,300 points
edited Feb 18, 2019 by Neha • 1,659 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
 • 8,140 points • 4,307 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
 • 59,190 points • 2,383 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 • 6,622 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
 • 69,180 points • 3,846 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 • 1,946 views
0 votes
1 answer

Compiling error in Java

Generally the file name and the class ...READ MORE

Mar 7, 2019 in Java by Priyaj
 • 58,020 points • 745 views
0 votes
1 answer

Rotate elements of array by n position

Here is what I came up with,  import ...READ MORE

Mar 3, 2019 in Java by Priyaj
 • 58,020 points • 886 views
0 votes
1 answer

How to break a number to individual digit?

The best way would be find the ...READ MORE

Mar 7, 2019 in Java by Priyaj
 • 58,020 points • 733 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
 • 3,350 points • 1,950 views
0 votes
1 answer

Mathematical Operations in Java

Ok. This is happening because you're dividing ...READ MORE

Feb 28, 2019 in Java by developer_1
 • 3,350 points • 930 views
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