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So you got a JAR file that contains your favorite Java game and you are wondering how to run a Java program from a JAR file? Or you may be simply trying your hand after running the Java program from the command prompt and Ec…
Java has very good support for handling Errors and Exceptions, It has a well-defined Exception hierarchy and language level support to throw and catch Exceptions and deal with them. Java Programmers often deal with built-in exce…
Java is an object-oriented programming language that allows developers to create complex software applications by organizing code into objects. One of the key features of object-oriented programming is Polymorphism . Polymorphism…
In the earlier article , I have shown you how to split String by regular expression and now, you will learn how to split string by comma . Since CSV is a popular format for exporting data, you often need to split a comma-separat…
No matter how Microsoft is doing in comparison with Google, Microsoft Office is still the most used application in software world. Other alternatives like OpenOffice and LiberOffice have failed to take off to challenge MS Offi…
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Abstract class is a special class in Java, it can not be instantiated and that's why can not be used directly. At first concept of abstraction, abstract class and interface all look useless to many developers, because you ca…
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Modulo Operator is one of the fundamental operators in Java. It's a binary operator i.e. it requires two operands. In a division operation, the remainder is returned by using the modulo operator. It is denoted by the % (perc…
First of all, welcome to the exciting world of Java programming. If you are ready to write your first Java program i.e. HelloWorld in Java, it means you already crossed major hurdles to start Java programming, in terms of insta…
Though modern IDE like Eclipse , IntelliJ or Netbeans allows you to generate equals, hashCode and compareTo methods for your value classes, it's equally important, you know how to do that by hand. By overriding equals and ha…
Comparator and Comparable are two interfaces in Java API, which is used to compare two objects in Java. Though both are used for comparison there are some differences between them, a major difference between Comparable and Compa…
String class provides split() method to split String in Java, based upon any delimiter, e.g. comma, colon, space or any arbitrary method. split() method splits the string based on delimiter provided, and return a String array …
Hello guys, you may not know but there are two date classes in Java, one in java.util package and other in the java.sql package. Though both are known as Date class, there is some difference between java.util.Date and java.sql.D…
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Hello guys, how are you doing? I have been sharing a lot of programming interview questions and coding problems for practice in this blog. Earlier, I have shared 21 String programing questions , 100+ data structure questions , an…
Hello guys, if you are wondering how to convert a String variable to int or Integer variable in Java then you have come to the right place. Earlier, I have showed how to convert Integer to String in Java and today, you will le…
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Hello guys, one of the common Programming, the day-to-date task is to compare two arrays in Java and see if they are equal to each other or not. Of course, you can't compare a String array to an int array, which means two …
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Hello guys, the first thing Java programmers learn is that they need a main method to run, but when they go to any Interview or college viva and ask can run a Java program without a main method , they are surprised like hell. Wel…