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This article uses various approaches for selecting the commands inserted in the opened command window through the Java code. The command window is opened by using ‘cmd’. Here, the methods of doing the same are specified using Java code. The Command window is first opened using the Java program. It is opened as a child process. If the java program is run in an existing cmd window, another one is opened as a new process. Further, different types of commands are inserted and executed in that opened command window via the java code. These programs may not work in ... Read More
The circumference of a circle is double the product of its radius and the value of PI. Therefore, to calculate the circumference of a circleGet the radius of the circle form the user.Calculate the productPrint the final result.Example: Finding the circumference of a circle import java.util.Scanner; public class CircumfrenceOfCircle { public static void main(String args[]){ int radius; double circumference; Scanner sc = new Scanner(System.in); System.out.println("Enter the radius of the circle ::"); radius = sc.nextInt(); circumference = Math.PI*2*radius; System.out.println("Circumference ... Read More
To find the Frequency of a character in a given String Read a string from the user. Read the character. Create an integer variable initialize it with 0. Compare each character in the given string with the entered character increment the above created integer variable each time a match occurs.Exampleimport java.util.Scanner; public class FrequencyOfACharacter { public static void main(String args[]){ System.out.println("Enter a string value ::"); Scanner sc = new Scanner(System.in); String str = sc.nextLine(); System.out.println("Enter a particular character ::"); char character = sc.nextLine().charAt(0); int count = 0; for (int i=0; i
Both onclick & href have different behaviors when calling JavaScript directly. Also the script in href won’t get executed if the time difference is short. This is for the time between two clicks.ExampleHere’s an example showing the usage of href vs onClick in JavaScript. Live Demo JavaScript href vs onClick() function myFunc() { var v = 0; for (var j=0; j
In Java, HashSet is a class which implements Set Interface. HashSet is a collection of unique elements which doesn’t store or allow us to store duplicate elements. In this section, we will be discussing about different approaches in java to find the first element and last element of a HashSet using Java programming Language. The HashSet class in java is implemented using a hash table. It uses hash code to retrieve data quickly from the table in HashSet, the order of elements is not preserved i.e., it doesn’t store the elements in the order in which we add elements ... Read More
What is the Full Form of JAVA? The full form of Java is "Just Another Virtual Accelerator". Java is not an abbreviation but some programmers made a full form. Basically, Java doesn’t have any full form or special meaning. This full form is used jokingly by the programmers. J Just A Another V Virtual A Accelerator Related Links Some of the related topics, you may like to read: Overview of Java programming language Features of Java programming language
A file represents a sequence of bytes, regardless of it being a text file or a binary file. File is collection of records or is a place on hard disk, where data is stored permanently. Operations on files The operations on files in C programming language are as follows − Naming the file Opening the file Reading from the file Writing into the file Closing the file Syntax The syntax for opening a file is as follows − FILE *File pointer; For example, FILE * fptr; The ... Read More
File is collection of records or is a place on hard disk, where data is stored permanently. Operations on files The operations on files in C programming language are as follows − Naming the file Opening the file Reading from the file Writing into the file Closing the file Syntax The syntax for opening a file is as follows − FILE *File pointer; For example, FILE * fptr; The syntax for naming a file is as follows − File pointer = fopen ("File name", "mode"); For example, fptr ... Read More
File is collection of records or is a place on hard disk, where data is stored permanently.Operations on filesThe operations on files in C programming language are as follows −Naming the fileOpening the fileReading from the fileWriting into the fileClosing the fileSyntaxThe syntax for opening a file is as follows −FILE *File pointer;For example, FILE * fptr;The syntax for naming a file is as follows −File pointer = fopen ("File name", "mode");For example, fptr = fopen ("sample.txt", "r"); FILE *fp; fp = fopen ("sample.txt", "w");fgets( ) and fputs( ) functions fgets() is used for reading a string from a file.The ... Read More
Stack is a linear data structure, where data is inserted and removed only at one end.AlgorithmsGiven below is an algorithm for Push ( ) −Check for stack overflow.if (top = = n-1) printf("stack over flow");Otherwise, insert an element into the stack.top ++ a[top] = itemGiven below is an algorithm for Pop ( ) −Check for stack underflow.if (top = = -1) printf("stack under flow");Otherwise, delete an element from the stack.item = a[top] top --Given below is an algorithm for Display ( ) −if (top == -1) printf ("stack is empty");Otherwise, follow the below mentioned algorithm.for (i=0; i