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Unit 3 Assignment 1 Import Java

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Part 1.1
IDE: NetBeanse IDE 8.1
IDK:java 1.8
Part1.2
import java.awt.geom.Area; import java.util.Scanner; public class MyLiblrary_130111{ public double area(int r) { return (r/2)*(r/2)*3.14; } public double area(double r) { return (r/2)*(r/2)*3.14; } public double area(int a, int b) { return a*b*3.14; } public double area(double c, double d) { return c*d*3.14; }
}

Part 1.3

package part1_130111;

import java.util.Scanner;

public class Part1_130111 {

public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("1\t Calculate the area of the Circle with integer Radius "); …show more content…

switch (choice) { case 1: { System.out.print("Enter the radius: "); int radius = (int) sc.nextDouble(); System.out.println(" the area of the Circle with integer Radius is = " + area(radius)); } break; case 2: System.out.print("Enter the radius: "); double radius = sc.nextDouble(); System.out.println( "the area of the Circle with double Radius is = " + area((int) radius)); break; case 3: System.out.print("Enter the a: "); int a = (int) sc.nextDouble(); System.out.print("Enter the b: "); int b = (int) sc.nextDouble(); System.out.println(" the area of the Circle with integer ellipse is = " + area(a,b));; break; case 4:System.out.print("Enter the c: "); double c = sc.nextDouble(); System.out.print("Enter the d: "); double d = sc.nextDouble(); System.out.println( "the area of the Circle with double ellipse is = " + area(c,d)); break; default: System.out.println("Exit");

}
} …show more content…

Part2.2 package Part2_130111;

public interface Usable { public boolean isUsable(); public void setAsUsable();

}
Part 2.3

package Part2_130111;

public class Book implements Usable{

private String title; private String desc; private String author; private String state; private int year; private String Publisher; private boolean

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