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‎README.md

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# Application Programming in Java
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Rustam Zokirov, 9.10.2020
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## References:
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- Java full tutorial:
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- https://www.javatpoint.com/java-tutorial
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- Java OOPs:
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- https://www.javatpoint.com/java-oops-concepts
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- Java exceptions:
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- https://www.javatpoint.com/exception-handling-in-java

‎lab-00/ComputeArea.java

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public class ComputeArea {
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public static void main(String[] args) {
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double radius; // Declare radius
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double area; // Declare area
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// Assign a radius
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radius = 20; // New value is radius
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// Compute area
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area = radius * radius * 3.14159;
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// Display results
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System.out.println("The area for the circle of radius " +
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radius + " is " + area);
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}
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}

‎lab-00/ComputeAreaWithConsoleInput.java

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import java.util.Scanner; // Scanner is in the java.util package
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public class ComputeAreaWithConsoleInput
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{
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public static void main(String[] args)
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{
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// Create a Scanner object
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Scanner input = new Scanner(System.in);
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// Prompt the user to enter a radius
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System.out.print("Enter a number for radius: ");
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double radius = input.nextDouble();
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// Compute area
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double area = radius * radius * 3.14159;
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// Display result
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System.out.println("The area for the circle of radius " +
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radius + " is " + area);
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}
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}

‎lab-00/DisplayUnicode.java

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import javax.swing.JOptionPane;
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public class DisplayUnicode {
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public static void main(String[] args) {
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JOptionPane.showMessageDialog(null,
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"\u6B22\u8FCE \u03b1 \u03b2 \u03b3",
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"\u6B22\u8FCE Welcome",
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JOptionPane.INFORMATION_MESSAGE);
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}
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}

‎lab-00/FahrenheitToCelsius.java

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import java.util.Scanner;
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public class FahrenheitToCelsius {
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public static void main(String[] args) {
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Scanner input = new Scanner(System.in);
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System.out.print("Enter a degree in Fahrenheit: ");
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double fahrenheit = input.nextDouble();
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// Convert Fahrenheit to Celsius
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double celsius = (5.0 / 9) * (fahrenheit - 32);
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System.out.println("Fahrenheit " + fahrenheit + " is " +
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celsius + " in Celsius");
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}
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}

‎lab-00/ShowCurrentTime.java

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public class ShowCurrentTime
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{
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public static void main(String[] args) {
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// Obtain the total milliseconds since midnight, Jan 1, 1970
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long totalMilliseconds = System.currentTimeMillis();
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// Obtain the total seconds since midnight, Jan 1, 1970
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long totalSeconds = totalMilliseconds / 1000;
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// Compute the current second in the minute in the hour
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long currentSecond = (int)(totalSeconds % 60);
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// Obtain the total minutes
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long totalMinutes = totalSeconds / 60;
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// Compute the current minute in the hour
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long currentMinute = (int)(totalMinutes % 60);
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// Obtain the total hours
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long totalHours = totalMinutes / 60;
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// Compute the current hour
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long currentHour = (int)(totalHours % 24);
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// Display results
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System.out.println("Current time is " + currentHour + ":"
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+ currentMinute + ":" + currentSecond + " GMT");
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}
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}

‎lab-00/UserInput.java

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// First Program
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import java.util.Scanner;
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class UserInput{
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public static void main(String[] args) {
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Scanner id = new Scanner(System.in);
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System.out.print("Hello Rustam! Enter a word: ");
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System.out.println(id.nextLine());
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}
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}

‎lab-00/Welcome.java

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// Java program to print text "Welcome to java!"
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/*
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Student : Rustam
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Student Id : U1910000
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*/
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public class Welcome
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{
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public static void main(String args[])
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{
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System.out.println("Welcome to Java!");
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}
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}

‎lab-01/01_-_Lab_Assignment_-_APJ.docx

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‎week-02/BMI_U1910049.java ‎lab-01/BMI.java

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import java.util.Scanner; // Import the Scanner class
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class Main { // Create a class Main
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class BMI { // Create a class Main
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public static void main(String[] args) { // Create main() method
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Scanner input = new Scanner(System.in); // Create a Scanner object
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‎lab-02/02-_Lab_Assignment_-_APJ_-_BMI_Interpretation.docx

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‎week-03/src/App.java ‎lab-02/App.java

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‎week-03/src/App2.java ‎lab-02/App_2.0.java

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‎lab-03/03-_Lab_Assignment_-_APJ_-_Mobile_TestMobile-_class_object.docx

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‎lab-03/MobileTest.java

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/*
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Rustam Zokirov, U1910049
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Lab Assignment #3
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*/
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import java.util.Scanner; // import Scanner class
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class Mobile { // Mobile class
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// attributes of class
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private String company, model; // model and company of phone
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private boolean isOn, hasCamera; // booleans isOn and hasCamera
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private int memory, volume; // volume from 0 to 10
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public Mobile(){ // default constructor
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company = "Samsung";
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model = "Z Fold 2";
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isOn = true;
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hasCamera = true;
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memory = 512;
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volume = 10;
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} // End
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public Mobile(String company,String model, boolean isOn, boolean hasCamera, int memory, int volume){ // parametrized constructor
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this.company = company;
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this.model = model;
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this.isOn = isOn;
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this.hasCamera = hasCamera;
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this.memory = memory;
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this.volume = volume;
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} // End
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public void setCompany(String company){ // Setter for company
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this.company = company;
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}
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public String getCompany(){ // Getter for company
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return company;
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}
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public void setModel(String model){ // Setter for model
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this.model = model;
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}
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public String getModel(){ // Getter for model
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return model;
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}
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public void setIsOn(boolean isOn){ // Setter for isOn
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this.isOn = isOn;
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}
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public boolean getIsOn(){ // Getter for isOn
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return isOn;
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}
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public void setHasCamera(boolean hasCamera){ // Setter for hasCamera
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this.hasCamera = hasCamera;
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}
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public boolean getHasCamera(){ // Getter for hasCamera
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return hasCamera;
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}
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public void setMemory(int memory){ // Setter for volume
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this.memory = memory;
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}
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public int getMemory(){ // Getter for volume
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return memory;
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}
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public void setVolume(int volume){ // Setter for volume
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this.volume = volume;
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}
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public int getVolume(){ // Getter for volume
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return volume;
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}
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public void switchOn(){
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if (!isOn) // Validating for on, off
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setIsOn(true);
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else
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System.out.println("\nMobile phone is already switched on!");
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} // End
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public void switchOff() {
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if (isOn) // Validating for on, off
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setIsOn(false);
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else
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System.out.println("\nMobile phone is already switched off");
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} // End
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public void increaseVolume() {
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if (isOn && volume < 10) {// validating volume (0, 10) and on, off
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volume++; // increasing volume
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System.out.println("Volume is " + getVolume()); // outputting the volume
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}
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else if (!isOn)
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System.out.println("\nMobile phone is switched off!");
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else
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System.out.println("\nVolume is 10!");
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}// End
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public void decreaseVolume() {
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if (isOn && volume >= 0) { // validating volume (0, 10) and on, off
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volume--; // decreasing volume
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System.out.println("Volume is " + getVolume()); // outputting the volume
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}
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else if (!isOn)
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System.out.println("\nMobile phone is switched off!");
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else
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System.out.println("\nVolume is 0!");
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} // End
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public void setDetail() { // this function will set all the needed info for object
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Scanner input = new Scanner(System.in); // Create a Scanner object
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System.out.println("\n***** Mobile phone details *****");
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System.out.println("Company: ");
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String inputCompany = input.next();
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setCompany(inputCompany); // setting the company to inputCompany
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System.out.println("\nModel: ");
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String inputModel = input.next();
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setModel(inputModel); // setting the model to inputModel
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setIsOn(true); // phone is On
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while(true){ // validating the input
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System.out.println("\nHas Camera? (1.Yes 2.No) ");
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int inputHasCamera= input.nextInt(); // taking the input
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if (inputHasCamera == 1) {
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setHasCamera(true); // setting the hasCamera
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break;
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}
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else if (inputHasCamera == 2) {
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setHasCamera(false); // setting the hasCamera
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break;
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}
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else{
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System.out.println("\nPlease enter values 1 or 2!");
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}
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}
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while (true){ // validation the memory input
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System.out.println("\nMemory: ");
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int inputMemory = input.nextInt();
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if(inputMemory > 0){
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setMemory(inputMemory);
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break;
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}
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else
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System.out.println("\nPlease enter correct values!");
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}
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while (true) { // validating the volume
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System.out.println("\nVolume (0, 10): ");
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int inputVolume = input.nextInt();
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if(inputVolume >= 0 && inputVolume <= 10){
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setVolume(inputVolume);
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break;
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}
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else
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System.out.println("\nPlease enter correct values!");
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} // End
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}
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public void getDetail(){
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System.out.println("\n***** Mobile phone details *****");
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System.out.println("Company: " + getCompany());
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System.out.println("Model: " + getModel());
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System.out.println("On: " + getIsOn());
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System.out.println("Has Camera: " + getHasCamera());
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System.out.println("Memory: " + getMemory());
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System.out.println("Volume: " + getVolume());
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}
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} // End
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public class MobileTest { // MobileTest class
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public static Scanner input = new Scanner(System.in); // Create a Scanner object
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public static void main(String[] args){ // main method
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int option, isExit; // initializing some variables
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Mobile mobile = new Mobile(); // creating object of Mobile
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do {
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option = showMenu(); // the option for switch
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switch (option){
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case 1:
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mobile.setDetail();
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break;
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case 2:
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mobile.getDetail();
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break;
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case 3:
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mobile.increaseVolume();
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break;
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case 4:
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mobile.decreaseVolume();
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break;
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case 5:
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mobile.switchOn();
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break;
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case 6:
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mobile.switchOff();
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break;
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case 0:
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System.out.println("Quitting Program...");
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System.exit(0); // program ends
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break;
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default:
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System.out.println("\nSorry, please enter valid option!");
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} // End of switch
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System.out.println("\n----------------------------------------------------------------------------");
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System.out.println("Do you want to continue? (1.Yes 2.No)");
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isExit = input.nextInt(); // valid-on
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} while(isExit == 1);
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} // End of main
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public static int showMenu() {
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int option = 0;
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// Printing menu to screen
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System.out.println("\n***** MAIN MENU *****");
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System.out.println("1. Set details");
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System.out.println("2. Get details");
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System.out.println("3. Increase volume");
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System.out.println("4. Decrease volume");
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System.out.println("5. Switch on");
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System.out.println("6. Switch off");
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System.out.println("0. Exit");
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// Getting user option from above menu
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System.out.println("Your choice: ");
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option = input.nextInt();
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// re
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return option;
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} // End of showMenu
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} // End of class MobileTest

‎lab-04/04-_Lab_Assignment_-_APJ_-_Inheritance.docx

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