In this tutorial you will learn about binary search in Java. Binary search is a searching algorithm that uses divide and conquer technique. The array on which searching is to be done must be sorted in ascending order. The target element is compared with middle element. If it is less than middle element then left half …
In this tutorial you will learn about Java Virtual Machine (JVM) architecture. What is JVM? Java Virtual Machine (JVM) is software or a virtual machine that takes .class file as an input and runs java bytecode. Java is machine independent but JVM is machine dependent. What is Bytecode? When java program is compiled using …
Here you will learn about Comparable vs Comparator in Java. Difference between Comparable and Comparator is one of the commonly asked questions in Java interviews. Both the interfaces are used to sort collection objects but still there are some differences between them which I have discussed below. Also Read: Comparable and Comparator Example Comparable vs Comparator …
Here you will learn about linear search in Java. It is one of the simplest and basic searching algorithm which is also known as sequential search. The targeted element is compared with each element of array until it is found. Its best and worst case time complexity is O (1) and O (n) respectively. Also …
There are mainly five different ways to take input from user in java using keyboard. 1. Command Line Arguments 2. BufferedReader and InputStreamReader Class 3. DataInputStream Class 4. Console Class 5. Scanner Class Below I have shared example for each of them. How to Take Input from User in Java Command Line …
Here you will learn about Java command line arguments. The arguments that are passed from command line at the time of running the program are called command line arguments. It is one of the ways to take input from user in java. It works only when we are running the program from command line and …
In this tutorial you will learn about java properties file and how to perform read and write operations on it. What is properties file? In Java related technologies, properties file is used to store configuration data or settings of application. It has .properties extension. Why we need properties file? It makes application maintenance …
The error javac is not recognized as an internal or external command arises when we try to compile any java source file using javac command. The reason for this error is because the path of javac command is not set properly. This error can be solved easily by setting javac compiler path in environment variables. …
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