This article will teach young programmers on how to use dialog boxes to input and output in Java. Dialog boxes are windows in which programs display important messages to the user. The class” JOptionPane” from the package “javax.swing” provides dialog boxes that enables programs to display boxes containing messages. There are two methods used in […]
Java Code to display Time and Date This is a Java program to display Time and Date. import java.time.LocalTime; import java.time.LocalDate; public class Time{ public static void main(String[] args){ LocalTime timeOnApp= LocalTime.now(); LocalDate dateOnApp= LocalDate.now(); System.out.println(“The time is:”+timeOnApp); System.out.println(“Todays’s date is:”+dateOnApp); } } Output The Time is:13:59:24:081 Today’s Date is:2019-08-20
GUI Components GUI means Graphical User Interface. It provides a user-friendly mechanism for interacting with an application. This is one of the most interesting topics in JAVA. When a programmer knows how to use the GUI component, he is getting close to the professional level in JAVA programming. GUI components enables programmers to add features […]
Object Oriented Programming Object oriented programming is based on its primary feature which is inheritance. Inheritance is a process in which a new class is created using members of predefined class. The new class inherit the members of an existing well proven and debugged class. The existing class is called Superclass, while the new class […]
Protected members in java Protected keywords is used before the Instance Variable of a Superclass so that the Instance Variable can be accessible by the Subclass by calling ( ) method. Protected members are the Instance Variables that has the keyword protected before them as shown below: Public class CommissionStaff { protected string lastName; protected […]
There are other ways of calculating the roots of a quadratic equation but in this Java program we are using the “Quadratic Formula”. In a quadratic equation three variables(a,b,c) are needed to find the unknown. Example: import java.util.Scanner; import java.lang.Math; public class AlmightyFormular{ public static void main(String [] args){ Scanner input = new Scanner(System.in); System.out.print(“Enter […]
In this Java program to display Time, there are two classes namely; class Time1 and class RunTime. Class Time1 represents the time of day. Class RunTime is an application class in which the main method creates one object pf the class Time1 and calls its methods. These classes are declared in separate files because they […]
Tenary operator is Java’s own conditional operator. It can be used in place of if … else statement. It can take three operands. It’s symbol ?: together with the operands form a conditional expression. Example: import java.util.Scanner; public class Tenary{ public static void main(String [] args) { // the object input is created from the […]
This is a Java program to accept and display array elements. And arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value. So in this program we are storing numbers into a variable elements. Below is the source code for the program. import java.util.Scanner; public class […]
Java Math class provides several methods to work on math calculations like min(), max( ), sin( ), tan( ),pow( ) etc. The class math comes from the package “java.lang”. There are many methods for performing basic numeric operations such as cube root, logarithm and trigonometric functions. The various math methods are as follows: Basic Math […]
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