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Java Articles
Page 171 of 450
Java program for longest subsequence of a number having same left and right rotation
In this tutorial, we will learn how to find the maximum length of the subsequence having the same left and right rotations in Java. We find the maximum length of such subsequence. Finding the longest subsequence with identical or alternating digits We will solve the problem based on a particular observation. The strings can only have the same left and right rotations if all digits of strings are equal or it contains the two digits alternatively, and the string length is even. Step 1: Initialize Variables: Initialize the len variable with the string length and ...
Read MoreJava Program for Arithmetic Operations Between BigDecimal and Primitive Data Types
In this article, we will explore how to perform arithmetic operations between BigDecimal and Primitive data types by using Java. For instance, Addition: The sum of a BigDecimal object with a value of 10.50 and an int primitive with a value of 5 is a BigDecimal object with a value of 15.50. 10.50 + 5 = 15.50 SyntaxThe syntax doubleValue() method returns the value of a BigDecimal object as a double primitive type. double doubleNum1 = num1.doubleValue(); Where “num1” is a BigDecimal object. What is BigDecimal in Java? BigDecimal is a class in Java's java.math package that ...
Read MoreJava Program to count inversions of size three in a given array
In this article, we will learn how to count inversions of size three in a given array. The goal is to find how many triplets (i, j, k) exist such that i < j < k and arr[i] > arr[j] > arr[k].Understanding Inversion Count Inversion count is a step-counting method by which we can calculate the number of sorting steps taken by a particular array. It is also capable of counting the operation time for an array. But, if we want to sort an array in a reverse manner, the count will be the maximum number present in that array. Array: ...
Read MoreJava Program to Convert the ArrayList into a String and Vice Versa
In this article, we will understand how to convert the ArrayList into a string and vice versa. The ArrayList class is a resizable array, which can be found in the java. util package. The difference between a built-in array and an ArrayList in Java is that the size of an array cannot be modified. ArrayList definitionAn ArrayList in Java is a resizable array found in the java.util package, which allows for dynamic modifications in size as elements are added or removed. It supports ...
Read MoreJava DatabaseMetaData getTimeDateFunctions() method with example
In this article, we will learn how to retrieve the list of time and date functions in the database using the getTimeDateFunctions() method of the DatabaseMetaData class in Java. getTimeDateFunctions() The getTimeDateFunctions() method retrieves the list of time and date functions supported by the current database. The names returned by this method are the Open CLI time and date function names. Steps to Retrieve Time and Date Functions in Database To get the list of the time and date functions supported by the underlying database − Step 1: Register the Driver: Make sure your database is ...
Read MoreJava sql.Time setTime() method with example
In this article, we will learn the usage of the setTime() method in Java with a complete example. Handling time-related data is an essential aspect of many Java applications, especially when interacting with databases. The java.sql.Time class, designed to handle SQL TIME values. What is setTime() method The setTime() method of the java.util.Time class accepts a variable of long type, representing the number of milliseconds from the epoch time (January 1, 1970, 00:00:00.000 GMT) to the required time, and sets the specified time value to the current Time object. //Setting time time.setTime(time_value_in_long); Use Cases of setTime() Following are the use ...
Read MoreJava Program to Sort ArrayList of Custom Objects by Property
In this article, we will learn to sort ArrayList of custom objects by property in Java. The ArrayList class extends AbstractList and implements the List interface. ArrayList supports dynamic arrays that can grow as needed. Problem Statement ArrayList is created with an initial size. When this size is exceeded, the collection is automatically enlarged. When objects are removed, the array may be shrunk. Below is a demonstration of the same − Input − The list is defined as Java Scala Python Mysql Output − The list after sorting values: Java Mysql Python Scala ...
Read MoreJava program to convert millisecond to readable string
In this article, we will learn to convert milliseconds to readable strings in Java. Converting milliseconds into a human-readable format such as hours, minutes, seconds, and milliseconds is a common programming task, especially in time-sensitive applications. Problem Statement The challenge is to convert a given time in milliseconds into a readable string that shows hours, minutes, seconds, and remaining milliseconds. Input long millis = 5000000; Output Hours = 1 Minutes = 23 Seconds = 20Milliseconds = 0 1 hr(s) 23 min(s) 20 sec(s) 0 ms Approaches to convert millisecond to readable string Following are the two different approaches to converting milliseconds ...
Read MoreJava program to generate n distinct random numbers
In this article, we will learn to generate n distinct random numbers within a specified range, ensuring that no number is repeated in Java. Generating random numbers is a common problem in various applications such as simulations, games, and testing. Problem Statement In this problem, we are given a number n, and we need to generate n unique random numbers within a defined range, ensuring that no number is repeated. The range can be specified by the user, or it can be a default range based on the problem's requirements. Input int n = 10; Output [4, 6, 9, 1, ...
Read MoreJava Program to Find the Volume of Capsule
A capsule is a three-dimensional geometric figure that consists of a cylindrical body with hemispherical ends on both sides. The volume of a capsule can be calculated by adding the volume of the cylindrical part and the volume of the two hemispherical ends present on both sides of the cylindrical part. In this tutorial, we are going to discuss how to find the volume of a given capsule in Java using different approaches. Formula for Volume of Capsule The formula for the volume of a capsule is as follows: Volume of Capsule = Volume of cylinder + Volume of both ...
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