Trending questions in Java

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Converting String and Float Data-types

Using Java’s Float class. float f = Float.parseFloat("25"); String s = ...READ MORE

May 9, 2018 in Java by developer_1
 • 3,300 points • 55 views
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Need for finalize() in Java

finalize() is a method called by the ...READ MORE

May 8, 2018 in Java by code.reaper12
 • 3,450 points • 81 views
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Convert String type to byte[] in Java

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

May 8, 2018 in Java by Rishabh
 • 3,540 points • 81 views
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Perform "Switch-case" on String in Java

Switches based on integers can be optimized ...READ MORE

May 8, 2018 in Java by Rishabh
 • 3,540 points • 56 views
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Sorting an ArrayList in Java

You can easily do this by simply ...READ MORE

May 4, 2018 in Java by geek.erkami
 • 2,320 points • 211 views
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Purpose of “String args[]” in the “psvm” of Java

Let me give you the complete explanation ...READ MORE

May 7, 2018 in Java by code.reaper12
 • 3,450 points • 93 views
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In which class is the "length" property of array defined ?

It's defined in the Java language specification: The members ...READ MORE

May 8, 2018 in Java by Rishabh
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Following error is occurring "Can't start Eclipse - Java was started but returned exit code=13"

There are combinations of Operating System, JDK ...READ MORE

Apr 19, 2018 in Java by Rishabh
 • 3,540 points • 804 views
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Difference between String.equals() and ==

Though both are used for comparison, but the ...READ MORE

May 7, 2018 in Java by geek.erkami
 • 2,320 points • 31 views
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How to calculate the difference between two date instances in Java?

You can use Joda Time Library. Interval i ...READ MORE

May 4, 2018 in Java by parth295
 • 4,640 points • 58 views
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How can I read a large text file line by line using Java?

// Open the file FileInputStream file = new ...READ MORE

May 2, 2018 in Java by parth295
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Reflection: Explanation and Uses

Reflection API is used to modify or examine the behavior ...READ MORE

May 2, 2018 in Java by sharth
 • 3,330 points • 36 views
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What is the difference between Runnable and extends Thread

Runnable is the preferred way to create ...READ MORE

Apr 30, 2018 in Java by sharth
 • 3,330 points • 112 views
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How can a war file be deployed in Tomcat 7?

You can access your application from: http://localhost:8080/sample Deploying ...READ MORE

Apr 20, 2018 in Java by sophia
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How to fix the error failed to load the JNI shared Library?

You need these three things : 64-bit OS 64-bit ...READ MORE

Apr 19, 2018 in Java by sophia
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How to pad string in Java?

Padding to 10 characters: String.format("%10s", "foo").replace(' ', '*'); String.format("%-10s", ...READ MORE

Apr 30, 2018 in Java by Rishabh
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Can Static methods be inherited in java?

A subclass inherits all of the public ...READ MORE

Apr 30, 2018 in Java by Daisy
 • 8,050 points • 58 views
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What do we understand from string pool in java?

This prints true (even though we don't use equals method: correct ...READ MORE

Apr 30, 2018 in Java by Daisy
 • 8,050 points • 40 views
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How can I create an executable JAR with dependencies using Maven?

<build> <plugins> <plugin> ...READ MORE

Apr 26, 2018 in Java by sophia
 • 1,400 points • 204 views
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What are optional parameters in Java

Using three dots: public void move(Object... x) { ...READ MORE

Apr 27, 2018 in Java by developer_1
 • 3,300 points • 76 views
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difference between wait() and sleep() in java

We can find a big difference between ...READ MORE

Apr 25, 2018 in Java by developer_1
 • 3,300 points • 66 views
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How can I Sort an ArrayList in Java

You can sort the ArrayList in 2 ...READ MORE

Apr 23, 2018 in Java by sharth
 • 3,330 points • 66 views
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what are the ways in which a list can be iterated

  There are 5 ways to iterate over ...READ MORE

Apr 23, 2018 in Java by sharth
 • 3,330 points • 53 views
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What is the difference between jdk and jre?

JRE: It stands for Java Runtime Environment. ...READ MORE

Apr 20, 2018 in Java by Akrati
 • 3,150 points • 147 views
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Is it possible to run a java program from command line on windows?How?

  Let's say your file is in C:\myprogram\ Run ...READ MORE

Apr 18, 2018 in Java by sophia
 • 1,400 points • 152 views
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How do I create a Java string from the contents of a file?

If you're looking for an alternative that ...READ MORE

Apr 19, 2018 in Java by Rishabh
 • 3,540 points • 95 views
0 votes
1 answer

Sorted array is being processed faster than unsorted array. Why is it so ?

What is Branch Prediction? Consider a railroad junction: Image by ...READ MORE

Apr 18, 2018 in Java by Rishabh
 • 3,540 points • 94 views
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Sort a Map<Key, Value> by values

This might help solve your problem...!!!! public class ...READ MORE

Apr 18, 2018 in Java by Rishabh
 • 3,540 points • 56 views
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How to print java array in the simplest way?

String[] arr = new String[] {"John", "Mary", ...READ MORE

Apr 17, 2018 in Java by sophia
 • 1,400 points • 78 views
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I am learning looping statements. Can you tell me how 'for-each' works in Java?

While programming we often write code that ...READ MORE

Apr 17, 2018 in Java by Rishabh
 • 3,540 points • 53 views
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How to take input from users?

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

Apr 17, 2018 in Java by Akrati
 • 3,150 points • 38 views
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Ho do I Iterate through a HashMap which contains duplicate values

What is the fastest and the best ...READ MORE

Apr 16, 2018 in Java by Daisy
 • 8,050 points • 58 views
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How do I fix a NullPointerException?

When you declare a reference variable (i.e. ...READ MORE

Apr 13, 2018 in Java by parth295
 • 4,640 points • 90 views
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How to divide a string in two parts

String s="yourstring"; boolean flag = true; for(int i=0;i<s.length();i++) { ...READ MORE

Apr 13, 2018 in Java by Rishabh
 • 3,540 points • 47 views
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