2020-01-06 13:31
FileWriter Appending :
FileWriter has the following constructor to append a content to existing file. Constructs a FileWriter object given a File object. If the second argument is… Read More
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2020-01-06 13:28
FileWriter
FileWriter can be used to write a character file, It can be used to write a char or String in java.
Example
import java.io.FileWriter;
import java.io.IOException;
public cl… Read More
2020-01-06 13:25
BufferedReader
Reads text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines.
The buffer size may be specified, o… Read More
2020-01-06 13:23
FileReader
FileReader class for reading character files, It can read any file char by char.
Example
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
publi… Read More
2020-01-06 13:18
Synchronized block example
Instead of synchronizing the entire method we can synchronize a small piece of code using block.
Example
public class Sample implements Runnable {
public… Read More
2020-01-06 13:13
File
An abstract representation of file and directory pathnames, File class help developer to work with files like creating, renaming, deleting etc…
Example
import java.io.File;
i… Read More
2020-01-06 13:09
Synchronization:
Synchronization prevents concurrent execution of method or block that depends on same object, Threads communicate primarily by sharing access to fields and the objects refer… Read More
2020-01-06 13:01
Runnable interface:
Creating threads using runnable interface will not block you from using inheritance, Create a class that impliments Runnable interface and override a run method in it.
Pr… Read More
2020-01-06 12:57
Thread Using Thread Class
Step 1
Create a class that extends thread class and write your functionality in it.
public class Sam extends Thread {
public void print() {
for (int i = 1;… Read More
2020-01-06 12:50
Thread:
The Java platform is designed from the ground up to support concurrent programming, threads can share the resource and can run concurrently.
Multithreaded execution is an essential f… Read More
2020-01-06 12:47
User defined exception:
Java allows us to write own exception class for our project, we all know that all exceptions are subclasses of Exception.
Writing custom unchecked Exception
To create… Read More
2020-01-05 15:10
This tutorial shows you how to install java in windows 10.
Related Posts:Installing the Google Plugin for EclipsePreparation To Use This TutorialSpring FrameWorkSPRING TUTORIALThis Program d… Read More
2019-12-02 10:08
Java Example Program to swap numbers without using third or temp variable
/* java program for swapping of two numbers without using third variable*/
/**
*@author:Candidjava.com
*@Descri… Read More
2019-12-02 04:14
Servlet Advantage
Servlets provide a way to generate dynamic documents that is both easier to write and faster to run.
provide all the powerfull features of JAVA, such as Exception handling… Read More
2019-12-01 10:02
Free java training in Chennai (Learn Java and Pay after get placed)
At candid we provide Java training and placement for 2017 and 2018 job seekers
Students will be given training in live pro… Read More
2019-09-25 08:20
Cookie example program using getDomain()/setDomain() method to Get/Set the domain name of cookie.
GetDomain.java
package com.candidjava;
import java.io.IOException;
import java.io.Pr… Read More
2019-09-25 02:14
In this tutorial learn how the Spring MVC framework supports form handling, and then build a sample application that handles a registration form.
Project Structure:
JAR Files:
Controller.j… Read More
2019-09-09 04:33
Cookie example program using setSecure() method to Set the browser to send files only throw secure protocol.
SetSecure.java
package com.candid;
import java.io.IOException;
impo… Read More
2019-07-14 09:27
Cookie example program using getPath()/setPath to Get/Set the cookie path
GetPath.java
package com.candidjava;
import java.io.IOException;
import java.io.PrintWriter;
import javax.s… Read More
2019-07-13 02:13
Cookie example program using getComment(), setComment() methods to get or set a comment
GetComment.java
package com.candidjava;
import java.io.IOException;
import java.io.PrintWriter… Read More
2019-07-13 02:07
Copies all of the mappings from the specified map to this map. These mappings will replace any mappings that this map had for any of the keys currently in the specified map.
Putall.java… Read More
2019-07-11 03:17
Create a Statement:
This tutorial explains how to Create a table in MySQL using java statement example, Load the MySQL driver using Class.forName method and create a connection to communicat… Read More
2019-07-11 02:00
BACK
In this tutorial, you will learn how to Reverse String Using StringBuffer Reverse Method With Example program.
StringBufferReverse.java
public class StringBufferReverseExample {… Read More
2019-07-10 04:56
Following Calendar in java example program will be based on how to set int year, int month, int date, int hour, int minute, int second.
CalendarSet.java
/**
*@author:candidjava.com… Read More
2019-07-10 02:31
BACK
Java ArrayList trimToSize() Method example trimToSize() method is used for memory optimization. It trims the capacity of ArrayList to the current list size.
Example Program
TrimtoSize… Read More
2019-07-09 09:23
Replace the first occurrence of a string for given regex String replaceFirst(String regex, String replacement). This method is used to replace the first character of the string. First occurr… Read More
2019-07-09 05:05
BACK
This Program used to return the empty set values using the empty() set method.
Example Program
import java.util.Collections;
import java.util.Set;
public class EmptySet {… Read More
2019-07-03 06:04
Java Example Program to calculate student grade using the Switch Case.
Findgrade.java
/**
@author:candidjava.com
@description:Program to calculate grade using Switch Case
*/… Read More
2019-07-03 05:18
Following Java, example program will be finding the Smallest Number between the group of numbers.
//Java Example Program to find the smallest of two numbers
/**
* @author:candidjava.com… Read More
2019-07-03 05:02
1. What is a Session Factory? Is it a thread-safe object?
SessionFactory is Hibernates concept of a single data store and is threadsafe so that many threads can access it concurrently and re… Read More
2019-07-03 02:55
Here is a simple Java Example Program to Print Numbers in Descending Order.
Descending.java
//Java Example Program to print numbers in Descending order
/**
@author:candidjava.com… Read More
2019-07-03 02:27
Following Java example program will check wheather the person is eligible for voting or not in Java.
//Java Example Program to find Persons eligble to Vote
/**
@author:candidjava.c… Read More
2019-07-01 05:51
Learn How Database Connection Works in java,
1. JDBC Architecture
2. Types Of JDBC Driver
Here two types of drivers which is JDBC MySQL connection
Sample JDBC Connect… Read More
2019-07-01 05:32
The Boolean class wraps a value of the primitive type boolean in an object. An object of type Boolean contains a single field, whose type is boolean.
In addition, this class provides useful… Read More
2019-07-01 05:22
What is JUnit?
Advantages of JUnit?
JUnit Jar download
List of annotation used in JUnit 4
Getting started example with JUnit
JUnit example with @Test annotation
Assert Example with JUnit
Tes… Read More
2019-06-29 08:04
Java Threads:
Multithreading refers to two or more tasks executing concurrently within a single program. A thread is an independent path of execution within a program. Many threads can run c… Read More
2019-06-29 05:09
BACK
The method public void putAll(Map Read More
2019-06-26 05:13
Java Example Program to display Numbers from 1 to N using Do While Loop
/*program to print numbers from 1 to N*/
/**
* @author:candidjava.com
* @Description:here, we are using do...whil… Read More
2019-06-26 05:06
Pre Increment and Decrement:
Following example of Increment and Decrement operator in java will Print the values using pre increment (++i) and pre decrement operator(–i).
Incrementdecr… Read More
2019-06-26 04:58
View image using servlet OutputStream:
Here is a project structure of how to display the image using servlet output stream example.
sample.jsp
Insert title here
click the butto… Read More
2019-06-22 07:28
/**
*@author :CandidJava.com
*@descriptions : This program explain the how to print number in increasing order using java
*/
class Pyramid
{
public static void m… Read More
2019-06-18 04:16
Wrapper Class Interview Question
1. What are wrapper classes?
Integer, Character, Double,Byte,Short,Boolean,Long,Float
2. What is a mutable object and… Read More
2019-06-11 10:50
Project Structure:
Jar Files:
Following is the list of required JAR files to be added in Java Class Path of your project. Download displaytag JAR files from
JAR FILES + TLD… Read More
2019-06-11 04:57
BACK
The unmodifiableCollection() method is used to return an unmodifiable view of the specified collection using unmodifiableCollection(Collection extends T> c)
Example Program
Unmod… Read More
2019-06-01 04:31
Error:
org.hibernate.exception.GenericJDBCException: Cannot open connection
Solution:
jdbc:oracle:thin:@localhost:1521:XE
Check whether the above property appear correctly in cfg file… Read More
2019-05-27 07:55
BACK
JSON object merging:
This program explains the concept of how to merging two JSON objects.
jsontofile.java
import java.io.FileWriter;
import java.io.IOException;
import java.io… Read More
2019-05-27 05:10
How Json object integrate with Jsp:
Project Structure:
jar files:
JSON Object Jsp.jsp:
JSON in JSP
Insert title here
Output:
DOWNLOAD
SOURCECOD… Read More
2019-05-27 03:09
Update statement:
This tutorial explains how to update an existing row in a table in MySQL using java statement example, Load the MySQL driver using Class forName method and create a co… Read More
2019-05-23 10:30
JSON Object With Servlet
ProjectStructure:
JarFiles:
JObject.java:
package com.candidjava;
import java.io.IOException;
import java.io.PrintWriter;
import jav… Read More
2019-05-21 10:44
BACK
Typesafe view by specified Map in collection public static Map checkedMap(Map m, Class keyType, Class valueType). The method is also used to typesafe view by used specified map.
Exampl… Read More
2019-05-21 10:01
HTTP Status 500
No getter method for property firstname of bean org. apache. struts. taglib. html. BEAN in struts
type :Exception report
message:
The server encountered an internal erro… Read More
2019-05-21 08:20
BACK
Java Program used to get the name of the file or directory mentioned in pathname using the getName() method.
String Get name program to get the name of the file or directory mentioned… Read More
2019-05-21 05:43
IS-A HAS-A Relationship
IS-A refers to inheritance or implementation.
IS-A is expressed with the keyword extends.
HAS-A means an instance of a class, member variable that can &hell…Read More
2019-05-21 04:09
BACK
Java Program returns an array containing all of the elements in this list in proper sequence (from first to last element) using T[] toArray(T[] a) method
Example Program
import ja… Read More
2019-05-17 02:48
Following simple java example program for printing the numbers in ascending order
//Java Example Program to Print the numbers in Ascending Numbers
/**
@author:candidjava.com
@de… Read More
2019-05-16 13:03
Here is a simple example program to a combined JSON object with Javascript.
Project Structure:
JSONObjectJs.html:
This is JSON Exam… Read More
2019-05-16 12:46
Following Java example program will demonstrate the how while loop conditions was works.
/*program for While Loop statement*/
/**
* @author:candidjava.com
* @description:Print t… Read More
2019-05-16 12:01
/**
*@author :CandidJava.com
*@descriptions : This program explain the function and use of shuffle() method
*/
import java.util.Vector;
import java.util.Collections;
class Sh… Read More
2019-05-16 10:46
For finding the date and time format using java program.
Following java program for finding the date and time.
//*@author :CandidJava.com
//@descriptions : This program explain the f… Read More
2019-05-16 10:36
Following Hibernate Association Mapping example will demonstrate how to Use One-To-Many method for Inserting Data.
Project Structure:
… Read More
2019-05-16 10:31
Following simple java example program will demonstrate how to check the given input number is even or not.
/**
* @author:candidjava.com
* @description:program to check whether the number… Read More
2019-05-16 10:26
BACK
Following java example method is used to check whether the specified element is present in the list or not. It returns boolean result(i.e true or false) based on the specified element… Read More
2019-05-16 09:36
BACK
Add an element to a Vector boolean add (Ee)
Add an element to a Vector boolean add(E e)
Remove an element from the Vector E remove (int index)
Remove an element from the Vector… Read More
2019-05-13 09:27
BACK
This tutorial explains how to find duplicate from TreeSet.
The easiest way to find duplicate entries from the given array is, create TreeSet object and add array entries to… Read More
2019-05-13 05:36
BACK
This tutorial explains how to Retrieve the value of the given Key in treemap using get(Object key) method. Returns the value to which the specified key is mapped, or null if… Read More
2019-05-10 10:07
JsonArray:
JSONArray holds values.
It is an ordered value.
It supports any data types (Boolean,Number,JSONArray,JSONObject,String).
Syntax:
JSONArray array=new JSONArray();
array.put("… Read More
2019-05-08 08:18
Project Structure
Jar Files
How To Add Jar Files:
spring-config.xml
KalaiJAVA
Student.java
package com.candidjava;
import java… Read More
2019-05-08 08:18
ProjectStructure:
JarFiles:
HowToAddJarFiles:
beans.xml:
DocWriter.java:
pac… Read More
2019-05-08 08:04
HashTable Example Programs
Hashtable Example program using Get Size()
Hashtable example program using iterate()
Hashtable example program for Get() Collection values
Hashtable… Read More
2019-04-26 11:00
BACK
This Collections Program is used to set the elements using newSetFromMap() Method.The unmodifiableCollection() method is used to return an unmodifiable view of the specified collection… Read More
2019-04-15 13:51
Join() method helps us to join one thread to the end of another thread. Here is a simple java thread example program.
// Thread Example Program for join()
/**
@author: candidjava.com
@d… Read More
2019-04-15 13:50
BACK
The unmodifiableSet() method Returns an unmodifiable view of the specified set in Descending order
Example Program
import java.util.*;
public class UnmodifiableSetclt {
public… Read More
2019-03-26 19:59
Hibernate Training
Open source object-relational mapping (ORM) library for Java language. Hibernate’s primary feature is mapping from Java classes to database tables. Gettin… Read More
2019-03-26 19:43
Introduction
What is MVC framework?
o Difference between Struts 1 and Struts 2 Architecture
o Environmental setup
o Flow and… Read More
2019-03-26 13:05
BACK
The method is used to search the specified list for the specified object using the binary search algorithm. The list must be sorted into ascending order according to the specified comp… Read More
2019-03-25 13:18
Abstract
An adaptive particle swarm optimization (APSO) that features better search efficiency than classical particle swarm optimization (PSO) is presented. More importantly, it can p… Read More
2019-03-20 12:00
Here is a java example program for collections frequency operation in Collection c, Object o. The main function of this method is to get the frequency of an element present in the speci… Read More
2019-03-20 12:00
BACK
ControllerClassNameHandlerMapping case sensitive Tutorial:
Learn how to handle URL requests mapping in Spring MVC. By checking three basic handler mapping classes which is based for Sp… Read More
2019-03-20 05:58
A LinkedHashMap is a combination of hash table and linked list. It has a predictable iteration order. Here simple java programming examples of getting hash map size in java.
i… Read More
2019-03-11 18:55
Here is a simple java example program to find out the Fibonacci series of numbers.
class Fibonacci {
public static void main(String args[]) {
System.out.println("How many numbers o… Read More
2019-03-11 18:48
In basics, Prime numbers are only divided by ‘1’ and number itself. At the same time, all the prime numbers are greater than ‘1’. Here is a simple prime num… Read More
2019-03-07 14:51
Java Collection tutorials:
AddAll()
For Insert a collection element in already excisting collection
LifoQueue()
For View of Deque in Last-in-first-out order
binarySearch(List extends T… Read More
2019-03-07 12:45
Introduction to JSP
Java Server pages (JSP) is a server side programming language helps to build
dynamic web based applications. Read More...
JSP Building blocks and its types
Script… Read More
2019-03-07 11:50
Append two String using StringBuffer append() Method.
Insert the String or word in a StringBuffer at the Specified Position.
Replace the String or Word in a String Buffer at the Specified P… Read More
2019-02-25 13:29
Here is an example program for checking the key which exists in a hashmap
//*@author :CandidJava.com
//*@descriptions : This program explain the function and use of Key me… Read More
2019-02-25 12:22
BACK
Following method is used to add All object to ArrayList from other Collection Objects.
Example Program
import java.util.ArrayList;
public class Fun
{
public static void… Read More
2019-02-25 12:15
Here is the hash table sample program for values, in this sample hashtable program adding values within the double quotes as shown in the following example program.
*@author:candidjava.co… Read More
2019-02-25 07:13
1. What’s the difference between constructors and normal methods?
Constructors must have the same name as the class and can not return a value. They are only called once while regular… Read More
2019-02-23 16:52
BACK
This tutorial explains how to Load a property list from the input character stream using Properties.load(Reader reader) method.Properties setProperty(String key, String value) calls th… Read More
2019-02-23 13:08
Following simple example program to demonstrate how offsetByCodePoints(int index,int codePointOffset) using StringBuilder.
/**
*@author:candidjava.com
*@description:StringBuilder… Read More
2019-02-23 12:30
BACK
The sort(List, Comparator super T>) method is used to sort the specified list according to the order induced by the specified comparator.
Example Program
import java.util.*;… Read More
2019-02-20 05:42
BACK
The singletonMap(K, V) method is used to get an immutable map, mapping only the specified key to the specified value.
Example Program
import java.util.*;
public class Map1 {… Read More
2019-02-18 10:26
BACK
RetailAll program to retain only elements specified in the specified collection.
Example Program
import java.util.ArrayList;
import java.util.LinkedList;
public class RetainAll {… Read More
2019-01-07 12:45
1. What are the different levels of ORM quality?
There are four levels defined for ORM quality.
Pure relational
Light object mapping
Medium object mapping
Full object mapping
2. What… Read More
2019-01-07 12:03
1. What are Extension interfaces?
When the built-in functionalities provided by hibernate is not sufficient enough, it provides a way so that user can include other interfaces and implement… Read More
2019-01-07 12:02
1. What is HQL?
HQL stands for Hibernate Query Language. Hibernate allows the user to express queries in its own portable SQL extension and this is called as HQL. It also allows the user to… Read More
2019-01-07 11:46
1. Types of locks
Read lock
Write lock
Execute lock
Fetch lock
Save lock
2. What is 2-phase lock?
Read only transaction
Update transaction
3. What are the design patterns used… Read More
2019-01-07 11:07
1. What is the purpose of dialect?
There are two concepts here a Dialect and a Driver,
Driver is like English.
Dialect is the different pronunciations of English.
We all know there are diffe… Read More
2019-01-07 11:06
1. What is caching?
Anything you can do to minimize traffic between a database and an application server is probably a good thing. In theory, an application ought to be able to maintain a ca… Read More
2019-01-05 07:10
Hibernate Interview Questions
Hibernate is one of the ORM tool developed for Java applications. for providing database oriented services hibernate was mostly used in enterprise related appli… Read More
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