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Object Oriented Programming Articles
Page 355 of 589
Java program to find the area of a parallelogram
In this article, we will understand how to find the area of a parallelogram using Java. A parallelogram has two pairs of parallel equal opposite sides. It has a base and a height which is the perpendicular distance between the base and its opposite parallel side. The area of a parallelogram is calculated using the formula − base * height i.e. b x h Problem Statement Write a program in Java to find the area of a parallelogram. Below is a demonstration of the same − Input Base : 6 Height : 8 Output Area parallelogram is ...
Read MoreJava program to get date for all the days of the current week
In this article, we will learn to get date for all the days of the current week using Java. We will use the java.time package to get the current date and calculate the dates for the rest of the week based on the current day. Steps to get date for all the days of the current week Following are the steps to get date for all the days of the current week − First we will import the DayOfWeek and LocalDate from java.time and Arrays class from java.util. We will get the current ...
Read MoreJava program to display table with columns in the output using Formatter
In this article, we will learn to display a table with columns in the output using Formatter in Java. The table will have headings and show different calculations of an array of floating-point numbers. The first column will display the original number, the second will display the number rounded up, and the third will display the number rounded down. Problem Statement Write a Java program to display a table with columns in the output using Formatter. Input double arr[] = { 1.7, 2.5, 3.1, 4.5, 5.7, 6.9, 7.7, 8.9, 9.1 }; Output The point list... Points1 Points2 Points3 1.70 2.00 1.00 2.50 ...
Read MoreJava program to display Floyd\'s triangle
In this article, we are going to see how to display Floyd’s Triangle using Java. Floyd's triangle is a popular right-angled triangular array consisting of natural numbers. It is formed by starting with the number 1 at the top of the triangle, and then incrementing each subsequent number by 1 as you move down the rows of the triangle. The first row contains only 1 number which is 1 itself and each subsequent row contains 1 more number than the previous row. The triangle has n rows where n can be any positive whole number. The total number of values in ...
Read MoreJava program to fill elements in a char array
In this article, we will fill elements in a char array using Java. We will be using the Arrays.fill() method to fill it with a specific character. This method allows us to assign a single character value to all elements in the array. We will fill the array with the character 'A' and then print the array using Arrays.toString() to display its contents in a readable format. Problem Statement Write a Java program to fill elements in a char array − Input charValue = 'A' Output The char array content is: [A, A, A, A, A] Steps to fill elements in a ...
Read MoreJava Connection getAutoCommit() method with example
In this program, we will establish a connection to a MySQL database and check the current auto-commit setting using the getAutoCommit() method from the Connection interface. We will first disable the auto-commit feature using setAutoCommit(false) and then retrieve the current auto-commit status with getAutoCommit() to verify if it has been successfully disabled. Steps to use the getAutoCommit() method Following are the steps to use the getAutoCommit() method − First, we will import the required java.sql.Connection and java.sql.DriverManager packages. We'll establish a connection to a MySQL database using the DriverManager.getConnection() method. ...
Read MoreJava program to accept an integer from user and print it
In this article, we will prompt the user to input an integer, and the entered value will be displayed back to them. To achieve this, we will use the Scanner class from java.util package, which allows us to read user input. Specifically, the nextInt() method of the Scanner class will be used to read the integer input from the user.Problem Statement Write a program in Java to accept an integer from the user and print it − Input Enter an integer: 2 Output Given integer is :: 2 Steps to accept an integer from the user and print it Following are ...
Read MoreJava program to add long integers and check for overflow
In this article, we will add two long integers in Java and check if the sum causes an overflow, which happens when the result exceeds the maximum value that a long data type can hold, defined by the Long class as Long.MAX_VALUE. If the sum goes beyond this limit, an exception will be thrown to handle the overflow. Otherwise, the sum will be displayed as the result. Steps to add long integers and check for overflow Following are the steps to add long integers and check for overflow − First, we will define two long integers ...
Read MoreJava program without making class
Is it possible to create and run a Java program without any class? The answer is Yes. The trick is to use an enum instead of a Class.Enums are similar to classes, but instead of using the class keyword, we use enum to define them. An enum is used to represent a public static constant. It can have a static main method as well. Steps to write Java program without making classFollowing are the steps to write a Java program without making class −We will start by defining an enum instead of a class. An enum typically represents constants, but it can also ...
Read MoreJava program to print mirror lower star triangle pattern
In this article, we will understand how to print a mirror lower star triangle pattern in Java. The program will use loops and print statements to get the output that we want, allowing us to get the pattern based on the number of rows specified by the user or predefined in the code. Problem Statement Write a Java program to print a mirror lower star triangle pattern. Below is a demonstration of the same − Input Enter the number of rows : 8 Output The mirror lower star triangle pattern : * * * * * * * * ...
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