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Java Articles
Page 173 of 450
Java Program to return a Date set to noon to the closest possible millisecond of the day
To set a Date object to noon to the closest possible millisecond of the day, we will make sure that the hour is set to noon, and both the minutes, seconds, and milliseconds are set to zero. This precise setting can be achieved using the Calendar class in Java. By setting these specific fields, we can ensure that the time is 12:00:00.000 PM, providing the closest possible millisecond representation of noon. Returning a date set to noon to the closest possible millisecond of the day in Java is quite easy. Let's learn the following ways: ...
Read MoreJava Program to create Character Array from String Objects
To create a character array from a string object, we convert each character of the string into elements of an array of type char. This is useful when we need to manipulate or access individual characters within the string. String Object: A string object is an instance of the String class representing a sequence of characters. It is immutable, which means once it is created, its value cannot be changed. Character Array: A character array is a data structure in Java that stores a sequence of characters. Creating Character Arrays from ...
Read MoreJava Program to display both horizontal and vertical grid lines in a JTable
To display both horizontal and vertical grid lines in a table, use the setShowGrid() method and set it to true − The setShowGrid() method is used in graphical user interfaces or data visualization tools to control the visibility of grid lines in a component, like a chart or a table. table.setShowGrid(true); JTable is a class in the Java Swing library, part of the JFC(Java Foundation Classes). It creates and manages tables in a GUI(graphical user interface) application. Syntax void setShowGrid(boolean showGrid) Parameter showGrid: A boolean that determines grid line visibility for both horizontal and vertical lines is true ...
Read MoreJava Program to Print Upper Star Triangle Pattern
In this article, we will learn to print the upper star triangle pattern in Java. Printing patterns is a common exercise to strengthen the understanding of loops in programming. One of the most popular patterns is the Upper Star Triangle, which visually resembles an inverted right-angled triangle of stars aligned from the top. Below is a demonstration of the same − Input Enter the number of rows : 8 Output The upper star triangle star pattern : * ...
Read MoreJava Program to convert integer to String with Map
In this article, we will learn to convert integers to String with Map in Java. The Stream API has become an essential tool for processing collections of data in a more declarative and readable way. Instead of using traditional loops, streams allow developers to filter, map, and perform other operations on data with minimal code Problem Statement Given an integer, we need to convert it to its string representation where the integer is treated as a character (e.g., 5 becomes "5", 10 becomes "10"). We'll use a Map to define the integer-to-string mappings and retrieve the string equivalent for a ...
Read MoreJava Program for Reversal algorithm for right rotation of an array
An array is a linear data structure that stores a group of elements with similar datatypes, in a sequential order. Once we create an array, we can’t change its size, i.e., it can store a fixed number of elements. In this article, we will learn how to write a Java program where we create an array and perform the right rotation using the reversal algorithm. Right Rotation of an Array Let’s understand the term right rotation in the context of an array. In the right rotation of an array, we simply shift the elements of the array to our right till the specified number ...
Read MoreJava Integer compare() method
Integer compare() Method The compare() method in the Integer class is a part of the Java interface and is used to compare two integers. It provides a way to compare two Integer objects or primitive int values and determine their relative ordering. This method is particularly useful when sorting or working with collections that involve integer values. Syntax public static int compare(int x, int y);Where − x: The first integer to be compared. y: The second integer to be compared. Return Value The compare() method returns an integer value that ...
Read MoreJava DatabaseMetaData getMaxBinaryLiteralLength() method with example.
In this article, we will learn about the getMaxBinaryLiteralLength() method of the DatabaseMetaData interface in JDBC. getMaxBinaryLiteralLength() method The getMaxBinaryLiteralLength() method of the DatabaseMetaData interface is used to find out the maximum number of characters (hex) that the underlying database allows for a binary literal. This method returns an integer value, representing the maximum length of a binary literal. If this value is 0 it indicates that there is no limit or, the limit is unknown. Steps to get the DatabaseMetaData object The following are the steps to get the DatabaseMetaData object − ...
Read MoreJava DatabaseMetaData getDatabaseMinorVersion() method with example
In this article, we will learn how to use the getDatabaseMinorVersion() method of the DatabaseMetaData interface in Java to retrieve the minor version of the underlying database. This method helps check the version details of the connected database. What is DatabaseMetaData?The DatabaseMetaData is an interface that provides methods to retrieve metadata about a database, such as the database product name, version, driver name, the total number of tables, views, and more. To get the DatabaseMetaData object, use the getMetaData() method of the Connection interface.Syntax: public DatabaseMetaData getMetaData() throws SQLException; ...
Read MoreJava Program to display Frame after some seconds
In this article, we will learn how to display a frame after a few seconds in Java using the Timer class. This example shows how to delay the visibility of a frame by 2 seconds using Swing. Timer() class The Timer class is used to schedule tasks that execute after a specific time interval or repeatedly at regular intervals. It allows tasks to be run by a thread that handles the scheduling and execution. Each task can be set to execute either once or repeatedly at fixed intervals. The execution of all tasks is managed by a background thread associated ...
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