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Java Articles
Page 204 of 450
Java program to replace a word with asterisks in a sentence
In this article, we will learn how to replace a specific word in a sentence with asterisks using Java. This technique can be useful for obscuring certain words in a text for privacy or censorship purposes. Problem Statement Develop a program in Java that takes a sentence and a word to be censored as input, then outputs the sentence with the specified word replaced by asterisks, while preserving the original format of the sentence. Input This is a sample only, the sky is blue, water is transparent Output This is a ****** only, the sky is blue, water is transparent ...
Read MoreJava program to reverse an array in groups of given size
An array can be reversed in groups of a given size by reversing the subarrays of the required size. In the given article, the program demonstrates a technique for reversing an array in groups of a specified size. This technique is useful in various computational tasks and algorithm design. The program takes an array and a group size as input and reverses the array in groups of that size. The original and modified arrays are then printed to the console. Problem Statement Write a Java program to reverse an array in groups of a given size. An example of ...
Read MoreDifference between Gradle and Maven
Gradle is a tool which is used in Java development. One of its main jobs is to create automation tools. Maven is used as an alternative to Gradle but it is older and helps in building the tools which are best for a project. Developers can make a choice between them on the basis of their requirements for a project. In this article, we will discuss the difference between Gradle and Maven. What is Gradle? Gradle is an open-source automation system which uses domain-specific language called Groovy. This is a programming language that uses XML for the configuration of a ...
Read MoreJava program to find length of the longest substring without repeating characters
In Java, substrings are part of the string which contains the continuous character of the string of any length from 1 to complete string. We are given a string and we have to find the length of the largest substring from the given string that only contains the unique characters. We will see three types of methods: finding every substring, sliding windows, and two-pointers. Problem Statement Given a string, write a Java program to find length of the longest substring without repeating characters − Input thisisthegivenstring Output The length of the longest substring that contains only unique characters is: ...
Read MoreJava program to find the first non-repeating character from a stream of characters
Finding the first non-repeating character in a string is a common programming problem. It involves finding the first character that appears only once in the string. This task helps understand how to manipulate strings and use basic data structures in Java. Problem Statement Given a string, identify the first character that does not repeat. If all characters repeat, indicate that there is no non-repeating character. Input tutorialspoint Output The first non-repeating character of the string is T Steps to find the first non-repeating character from a stream of characters Below are the steps to find the first non-repeating character from a ...
Read MoreDifference between Parallel and Sequential Streams in Java
Stream was introduced in Java 8 and it was included as java.util.stream package. It is a sequence of objects which acts as an array or a collection. Different types of methods are supported by stream. Besides this, stream also supports different kinds of aggregate operations which include − Filter Map Reduce Limit Match Find The source is not affected when any of these operations are performed on a stream. Instead of this, a new stream is created to apply these operations. There are two types of streams which are sequential and parallel. In this article, we will discuss ...
Read MoreDifference between List, Set, and Map in Java
Java has a java.util package that consists of a Collection interface. This interface has many sub-interfaces and classes like List, Set, and Map. In this article, we will learn the difference between List, Set, and Map. What is List Interface? Java has a Collection interface and List is the sub-interface of Collection. This interface consists of methods like insert, update, delete, and search. Developers are also allowed to insert null elements. List Interface Example The List interface can be found in the java.util package. An example of a List is given below − import java.util.*; public class ListExample { ...
Read MoreJava Program to Calculate Standard Deviation
In this article, we will understand how to calculate standard deviation. The standard deviation is the measure of how spread-out numbers are. The symbol of standard deviation is sigma( σ ). It is the square root of variance. Standard deviation is computed using the formula square root of ∑(Xi - ų)2 / N where Xi is the element of the array, ų is mean of the elements of the array, N is the number of elements, ∑ is the sum of the each element. Problem Statement Given a program in Java to calculate the standard deviation of a given ...
Read MoreJava Program to illustrate Total Marks and Percentage Calculation
We will demonstrate how total marks and percentages are calculated using Java programs. The term total marks refer to the summation of all the available marks, while the term percentage refers to the number obtained by dividing the calculated marks by total marks and multiplying the resultant by 100. percentage_of_marks = (obtained_marks/total_marks) × 100 Problem Statement Given a Java program to calculate the total marks and percentage of a student in a given set of subject. Input marks = { 69, 88, 77, 89, 98, 100, 57, 78 } Output Total Marks is: 656 Total Percentage is: ...
Read MoreJava Program to Find Area of circle Using Method Overloading
We can calculate the area of the circle in Java using Method Overloading. “Method Overloading” is a feature in Java that allows one to write more than one method in the same class using the same method name. It will enable us to declare more than one method with the same names but with different signatures i.e., the number of parameters in the method may be different or the datatype of parameters may be different. Now, let us achieve Method Overloading in Java by considering the “area of a circle” as an example. Before moving to an example, now ...
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