Most viewed questions in Java

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Apache maven vs Eclipse maven plugin

Hi, I want to install maven but don't ...READ MORE

Nov 25, 2020 in Java by zaraaq
 • 270 points • 583 views
0 votes
1 answer

Is there any way to write content of Java InputStream to an OutputStream?

org.apache.commons.io.IOUtils from Apache has a method called copy(InputStream,OutputStream).which does ...READ MORE

Jul 6, 2018 in Java by sharth
 • 3,370 points • 581 views
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1 answer

Measure time elapsed in Java?

This is also a way to work ...READ MORE

Jul 4, 2018 in Java by scarlett
 • 1,290 points • 581 views
0 votes
1 answer

Exception Handling: “ConcurrentModificationException” while removing elements from `ArrayList` while iterating it

Iterator<String> iter = myArrayList.iterator(); while (iter.hasNext()) { ...READ MORE

Jan 10, 2019 in Java by Sushmita
 • 6,910 points • 580 views
0 votes
1 answer

What does the function then() mean in JavaScript?

The then() method is similar to "Javascript ...READ MORE

Nov 4, 2022 in Java by Damonlang
 • 700 points • 579 views
0 votes
1 answer

How do I generate random integers within a specific range in Java?

Before Java 1.7, the standard way to ...READ MORE

Dec 22, 2020 in Java by Gitika
 • 65,910 points • 577 views
0 votes
1 answer

How do you produce a double in Java

double num = 5; When you do this, ...READ MORE

Oct 4, 2018 in Java by anto.trigg4
 • 3,440 points • 576 views
0 votes
2 answers

How do I rename a file using Java

// File (or directory) with old name File ...READ MORE

Oct 5, 2018 in Java by Sushmita
 • 6,910 points • 576 views
+1 vote
1 answer

What is the difference between JavaScript and Java

This quote rightly explains that 2 totally ...READ MORE

Jun 29, 2018 in Java by Daisy
 • 8,120 points • 573 views
0 votes
2 answers

How can I do url string decoding in java

We can use URLDecoder: URLDecoder.decode( url, "UTF-8" ); READ MORE

Dec 7, 2018 in Java by Sushmita
 • 6,910 points • 573 views
0 votes
1 answer

How to take input from users?

Scanner Class is used to take input ...READ MORE

Apr 17, 2018 in Java by Akrati
 • 3,190 points • 573 views
0 votes
1 answer

How to download minecraft java edition?

Downloading Minecraft: Java Edition is a straightforward ...READ MORE

Oct 30, 2023 in Java by anonymous
 • 3,320 points • 572 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 • 572 views
0 votes
1 answer

Iterable.forEach() vs foreach loop

The advantage comes into account when the ...READ MORE

Aug 21, 2018 in Java by Parth
 • 4,630 points • 571 views
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1 answer

Tail call optimization in JVM

The tail call optimization in JVM is difficult ...READ MORE

Oct 10, 2018 in Java by geek.erkami
 • 2,680 points • 570 views
0 votes
1 answer

This page didn't load Google Maps correctly. See the JavaScript console for technical details

The solution to your query is relatively ...READ MORE

Feb 11, 2022 in Java by Rahul
 • 9,670 points • 568 views
0 votes
1 answer

Optional return type of getter() in Java 8

Well, you can do that but originally ...READ MORE

Oct 23, 2018 in Java by code.reaper12
 • 3,500 points • 568 views
0 votes
0 answers

Can you control GIF animation with Javascript?

Is it feasible to use Javascript to ...READ MORE

Nov 16, 2022 in Java by Nicholas
 • 7,760 points • 567 views
0 votes
1 answer

Serializable interface in Java

Serializable is a marker interface that has ...READ MORE

Jun 13, 2018 in Java by code.reaper12
 • 3,500 points • 567 views
0 votes
1 answer

Working of post increment operator in Java

Well, I think the confusion is because ...READ MORE

May 23, 2018 in Java by geek.erkami
 • 2,680 points • 567 views
0 votes
1 answer

What is the use of assert keyword in java?

Java assertion feature allows the developer to ...READ MORE

Jun 28, 2018 in Java by scarlett
 • 1,290 points • 563 views
0 votes
1 answer

How to use ThreadLocal variable

You can use a ThreadLocal variable when you have some ...READ MORE

Oct 11, 2018 in Java by code.reaper12
 • 3,500 points • 560 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
 • 59,230 points • 559 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
 • 59,230 points • 559 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
 • 557 views
0 votes
0 answers

How do I copy to the clipboard in JavaScript?

How can I copy text to the ...READ MORE

Sep 28, 2022 in Java by Nicholas
 • 7,760 points • 554 views
0 votes
1 answer

Error - trustAnchors parameter must be non-empty

This bizarre message means that the truststore ...READ MORE

Oct 29, 2018 in Java by Daisy
 • 8,120 points • 554 views
0 votes
1 answer

Can edureka has portals to teach ?

Hi, @Dhanush, Regarding your query, I would suggest you ...READ MORE

Jun 2, 2020 in Java by Gitika
 • 65,910 points • 553 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
 • 552 views
0 votes
1 answer

Error: Unable to run mksdcard SDK tool in java?

Hello, If you use  Ubuntu, you can try: sudo apt-get ...READ MORE

Apr 9, 2020 in Java by Niroj
 • 82,880 points • 551 views
0 votes
0 answers

Where exactly in the variable file path will I paste the javac file path?

I wrongly placed the javac file in ...READ MORE

Apr 2, 2020 in Java by anonymous
 • 120 points • 550 views
0 votes
1 answer

What is the best Java email address validation method?

Apache Commons is generally known as a ...READ MORE

Sep 26, 2018 in Java by Parth
 • 4,630 points • 550 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
 • 3,320 points • 548 views
0 votes
1 answer

Usage of abstract class and interface

Well let me draw a clear line ...READ MORE

Oct 23, 2018 in Java by geek.erkami
 • 2,680 points • 547 views
0 votes
1 answer

Can anyone show how to implement SortByValue in Tree Map for Java ?

You can't have the TreeMap itself sort on the ...READ MORE

Dec 10, 2018 in Java by Sushmita
 • 6,910 points
edited Dec 10, 2018 by Sushmita • 544 views
0 votes
1 answer

What is the meaning of 'Synchronized'?

The synchronized keyword is about different threads reading and ...READ MORE

Oct 17, 2018 in Java by Parth
 • 4,630 points • 542 views
0 votes
1 answer

What are Daemon threads in Java?

A daemon thread is a thread that is doing ...READ MORE

Jun 29, 2018 in Java by Daisy
 • 8,120 points • 541 views
0 votes
0 answers

Why doesn't importing java.util.* include Arrays and Lists?

I am using java on debian 5 java ...READ MORE

Nov 16, 2022 in Java by Ashwini
 • 5,430 points • 540 views
0 votes
1 answer

How to replace 2 or more spaces with a single space in String and how to delete leading and trailing spaces?

before=" Hello world "; String after ...READ MORE

Aug 22, 2018 in Java by Parth
 • 4,630 points • 538 views
0 votes
1 answer

Base64 encoding and decoding in client-side Javascript

Some browsers, including Firefox, Chrome, Safari, Opera, ...READ MORE

Nov 4, 2022 in Java by Damonlang
 • 700 points • 537 views
0 votes
1 answer

How can we nicely format a floating number into String by removing unnecessary zeros?

public static String fmt(double d) { if(d ...READ MORE

Jun 6, 2018 in Java by Parth
 • 4,630 points • 536 views
0 votes
1 answer

How to use pairs or 2-tuples in java?

You can refer the following code: public class ...READ MORE

Jun 7, 2018 in Java by Daisy
 • 8,120 points • 535 views
0 votes
2 answers

File to byte[] in Java?

Example 1: Convert File to byte[] import java.io.IOException; import ...READ MORE

Dec 28, 2020 in Java by Reshma
 • 532 views
0 votes
2 answers

How may I programmatically determine operating system in Java?

Use the following program public class Osname {        public ...READ MORE

Jul 6, 2018 in Java by Priyaj
 • 58,090 points • 532 views
0 votes
1 answer

Can we use multiline String in Java?

It is not possible directly to use Multiline ...READ MORE

Jun 19, 2018 in Java by sharth
 • 3,370 points • 532 views
0 votes
1 answer

Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

To answer your doubt, the reason is ...READ MORE

Feb 10, 2022 in Java by Rahul
 • 9,670 points • 531 views
0 votes
1 answer

Running Command Line in Java

You may refer this: Runtime rt = Runtime.getRuntime(); Process ...READ MORE

Jul 20, 2018 in Java by Akrati
 • 960 points • 530 views
0 votes
1 answer

What are preparedstatements? How do they differ from statements?

Statement is used for static queries like ...READ MORE

Jun 8, 2018 in Java by Daisy
 • 8,120 points • 529 views
0 votes
1 answer

Java Static nested class

Hi, to understand their usage, you must ...READ MORE

Jun 8, 2018 in Java by v.liyyah
 • 1,300 points • 525 views
0 votes
1 answer

What do you mean by aggregation in Java?

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

Feb 18, 2019 in Java by Frankie
 • 9,830 points • 523 views
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