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Top 5 Books for Programming/Coding Interviews - Best of lot

If you are preparing for Programming Job interviews and looking for some of the best books for programming questions then you have come to …


Java Mistake 3 - Using "==" instead of equals() to compare Objects in Java

In this part of Java programming mistakes, we will take a look at another common pattern, where programmers tend to use "==" ope…


Membuat Grafik 3D

Jika pada posisi perintah sebagaimana contoh ke-tiga dari rangkaian ini dipanggil: make_3Dbar_graph, maka akan diperoleh grafik batang 3D. …


DRAG FILES KE FORM DELPHI

1.  unit Unit1; 2.  interface 3.  uses 4.    Windows, Messages, SysUtils, Classes, 5.    Graphics, Controls, Forms, Dialogs, StdCtrls, ComC…


How to Reverse Array in Java - Int and String Array Example

This Java tips is about, how to reverse array in Java, mostly primitive types e.g. int , long , double and String arrays. Despite of Java…


How to create Immutable Class and Object in Java - Tutorial Example

Writing or creating immutable classes in Java is becoming popular day by day, because of concurrency and multithreading advantage provided …


2 ways to combine Arrays in Java � Integer, String Array Copy Example

There are multiple ways to combine or join two arrays in Java, both for primitive like int array and Object e.g. String array. You can even…


How to Swap Two Numbers without Temp or Third variable in Java - Interview Question

How to swap two numbers without using temp or third variable is common interview question not just on Java interviews but also on C and C++…


How to convert XMLGregorianCalendar to Date to XMLGregorianCalendar in Java - Example Tutorial

There are several ways to convert XMLGregorianCalendar to Date in Java. You can convert XMLGregorianCalendar to either java.util.Date or …


How to add leading zeros to Integers in Java � String left padding Example Program

From Java 5 onwards it's easy to left pad Integers with leading zeros when printing number as String. In fact, You can use the same tec…


5 JSTL Core IF Tag Examples in JSP - Tutorial

<c:if> or if tag of JSTL core tag library in JSP is one of the most versatile and useful tag. JSTL if tag allows you to test for a …


How to convert JSON String to Java object - Jackson Example

JSON stands for JavaScript object notation, is a lightweight text or string representation of an object and quickly becoming a popular data…


How to disable submit button in HTML JavaScript to prevent multiple form submission

Avoiding multiple submission of HTML form or POST data is common requirement in Java web application. Thankfully, You can prevent multiple …


5 ways to check if String is empty in Java - examples

String in Java is considered empty if its not null and it�s length is zero. By the way before checking length you should verify that String…


How to check if a Number is Positive or Negative in Java - Interview Question

Write a Java program to check if a number is positive or negative is one of the popula r Java coding interview questions , it may look easy…


Method and Constructor Overloading Best Practices in Java

You need to be careful while overloading a method in Java, especially after the introduction of autoboxing in Java 5. Poorly overloaded met…


How to compare Arrays in Java � Equals vs deepEquals Example

java.util.Arrays class provides equals() and deepEquals() method to compare two Arrays in Java. Both of these are overloaded method to …


How to find middle element of LinkedList in Java in one pass

How do you find middle element of LinkedList in one pass is a programming question often asked Java and non-Java programmers in telephonic …


Recursion in Java with example � Programming Techniques Tutorial

Recursion is one of the tough programming technique to master. Many programmers working on both Java and other programming languages like C…


How to check if a number is a palindrome or not in Java - Example

How to check if a number is a palindrome or not is a variant of popular String interview question how to check if a String is a palindrom…