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Java Articles
Page 195 of 450
Java program to find cube root of a number using binary search
The cube root of a number is an integer value when multiplied by itself thrice, giving the original number. In this article, we are going to write a Java program to find the cube root of a number using binary search. Finding the cube root of a number is one of the applications of the binary search algorithm. We will discuss in detail how we calculate the cube root using a binary search algorithm in Java. Problem Statement Write a Java program to find the cube root of a number using Binary Search − Input 1 64 Output 1 4 ...
Read MoreJava program to find 2 elements in the array such that difference between them is largest
In this problem, we will find two array elements such that the difference between them is maximum using Java. We can make a pair of each element and find the difference between the elements of each pair. After that, we can take a pair whose element has a maximum difference. Another approach is to sort the array and take the largest and smallest elements from the array. Problem statement We have given an array containing the integer values. We need to find two array elements to maximize the difference between them. Input 1 array[] = { 50, 10, 30, ...
Read MoreJava program to set horizontal alignment of content in a JTextField
In this article, we will learn how to set the horizontal alignment of content in a JTextField class using Java Swing. The content in the JTextFile is by default left aligned, but you can change it using the setHorizontalAlignment() method. Steps to Set Horizontal Alignment of Content in a JTextField Following are the steps to set the Horizontal Alignment of content in a JTextField − Import the required Java Swing packages. Create a JFrame and set layout manager. Create JLabel and JTextField then set horizontal alignment. ...
Read MoreJava ResultSet isLast() method with example
When we execute certain SQL queries (SELECT query in general) they return tabular data. The java.sql.ResultSet interface represents such tabular data returned by the SQL statements i.e. the ResultSet object holds the tabular data returned by the methods that execute the statements which requires the database (executeQuery() method of the Statement interface in general). The ResultSet object has a cursor/pointer which points to the current row. Initially, this cursor is positioned before the first row. Java ResultSet isLast() Method The isLast() method of the ResultSet interface is used to determine whether the cursor is on the last row of the ...
Read MoreCheck whether the String contains only digit characters in Java
Introduction In this article, we'll explore how to check whether a given string contains only digits or a mix of digits and other characters in Java. We'll achieve this by using the String class and its matches() method. Problem Statement Given a string write a Java program to check whether it contains only digit characters. Input 1 4434 Output 1 String contains only digits! Input 2 5demo9 Output 2 String contains digits as well as other characters! Steps to check digit characters in String The following are the steps to check whether the String contains only digit characters in ...
Read MoreJava program to calculate distance light travels
In this article, we will demonstrate how to calculate the distance light travels in one year using Java. We will use the Demo class and the main method to perform this calculation. Speed of light: 186000Days = 365dist = speed * seconds Problem Statement Write a Java program to calculate the total distance that light travels in a year, given that the speed of light is 186, 000 miles per second. Output Light travels: 5865696000000 miles Steps to calculate distance light travels Following are the steps to calculate the distance light travels − Initialize the Demo class.Define ...
Read MoreJava program to split a list into two halves
In this article, we will understand how to split a list into two halves. A list is an ordered collection that allows us to store and access elements sequentially. It contains index-based methods to insert, update, delete, and search the elements. It can also have duplicate elements. We will be using different approaches to split a list into two halves − Problem Statement Write a Java program to split a list into two halves. As demonstrated below − Input Input list :[Java, Python, JavaScript, Shell, Scala] Output The first half of the list is: [Java, Python] The second half of ...
Read MoreJava program to subtract year from current date
In this article, we will learn to subtract a year from the current date using Java. We will be using the Calender class of java.util package. Calendar class in Java is an abstract class that provides different methods to convert between a specific instant in time and a set of calendar fields such as HOUR, DAY_OF_MONTH, MONTH, YEAR, and so on. It is also used for manipulating the calender field. Steps to subtract year from current date Following are the steps to subtract year from current date − Import the Calendar class from the java.util package. ...
Read MoreJava program to print Swastika by taking input from user
Swastika is a religious symbol of Hinduism, Buddhism, and Jainism. In this article, we will learn to print Swastika by taking user input. Here, are three different approaches for making this design using Java. In all the approaches, the size of the Swastika is decided by the user. The user provides the input for the table or frame size. The Swastika is often used as an example to learn rows, columns, and tabular layout concepts using different languages including Java. Making Swastika using Java. Here, three different approaches are used to make this design using Java − ...
Read MoreJava Naming Conventions
All Java components require names. Names used for classes, variables and methods are called identifiers. The naming conventions for different Java components are as follows: Package Naming Convention Class Naming Convention Interfaces Naming Convention Method Naming Convention Constants Naming Convention Variables Naming Convention Quick Summary Package Naming Convention Naming conventions for Java packages typically involve using lowercase letters. It's common to use ...
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