Java代写代考

import java.io.FileReader; import java.io.BufferedReader; import java.io.IOException; public class ReadFile1 { public static void main(String[] args) { try (BufferedReader br = new BufferedReader(new FileReader(“test.txt”))) { String text = null; while ((text = br.readLine()) != null) { System.out.println(text); } } catch (Exception e) { e.printStackTrace(); } } }

//IfElseExample.java – Demonstrates if-else control flow public class IfElseExample { public static void main(String args[]){ int i = 5; if ( i < 10) { System.out.println("i is less than 10"); } else { System.out.println("i is greater than or equal to 10"); } } }

// ConstantsVariablesExample.java // Demonstrates the use of constants and variables public class ConstantsVariablesExample { public static void main(String args[]) { final double PI = 3.1428; float radius = 5.5F; double area; boolean x = true; area = PI * radius * radius; System.out.println(“Circle Radius = ” + radius + ” Area = ” + area);

SWEN20003 Object Oriented Software Development Workshop 7 (Solutions) Eleanor McMurtry Semester 2, 2020 Workshop Questions 1. Implement Java classes following the diagram on the previous page. Solution: public abstract class Person implements Comparable { private final String name; private final int age; public Person(String name, int age) { this.name = name; this.age = age; }

//SwitchExample.java – Demonstrates the switch statement public class SwitchExample { public static void main (String args[]) { char x = ‘b’; switch(x) { case ‘a’: System.out.println(“Chracter = a”); break; case ‘b’: System.out.println(“Character = b”); break; default: System.out.println(“Other character”); break; } } }

SWEN20003 Object Oriented Software Development Workshop 3 (Solutions) Semester 1, 2021 Workshop Questions 1. Using the principle of information hiding, assign privacy modifiers (either public or private) to attributes and methods in the below class. Solution: public class Drone { private double homeX; private double homeY; private double x; private double y; private double altitude

import java.util.Scanner; public class TestScanner2 { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println(“Enter your input: “); double d = scanner.nextDouble(); float f = scanner.nextFloat(); int i = scanner.nextInt(); System.out.format(“%3.2f , %3.2f , %3d”, d, f, i); } }

import java.util.Scanner; public class TestScanner3 { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println(“Enter your input: “); double d = scanner.nextDouble(); scanner.nextLine(); String s1 = scanner.nextLine(); String s2 = scanner.nextLine(); System.out.format(“%3.2f, %s, %s”, d, s1, s2); } }