Restore
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
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<attributes>
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<attribute name="module" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>
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@@ -0,0 +1,17 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Question1</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>
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@@ -0,0 +1,2 @@
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eclipse.preferences.version=1
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encoding/<project>=UTF-8
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public class AirConditioner {
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//Instance Variables
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private boolean powerOn;
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private int mode;
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private int temperature;
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//Constructor-turn all settings to default
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public AirConditioner() {
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this.powerOn = false;
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this.mode = 0;
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this.temperature = 16;
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}
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//Methods
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public void turnOn() {powerOn = true;}
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public void turnOff() {powerOn = false;}
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public boolean getPower() {return this.powerOn;}
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public void setMode(int mode) {
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//if power down
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if(powerOn == false) {
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System.out.println("Please turn on the AC first");
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return;
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}
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//if invalid mode
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if(mode < 0 || mode > 2) {
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System.out.println("Invalid mode");
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return;
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}
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//default
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this.mode = mode;
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}
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public int getMode() {return this.mode;}
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public void setTemperature(int temp) {
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//if power down
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if(powerOn == false) {
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System.out.println("Please turn on the AC first");
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return;
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}
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//if dry mode
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if(mode == 2) {
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System.out.println("Cannot set the temperature in the dry mode");
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return;
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}
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//if invalid mode
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if(temp < 16 || temp > 30) {
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System.out.println("Invalid temperature");
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return;
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}
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//default
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this.temperature = temp;
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}
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public int getTemperature() {return this.temperature;}
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//Test
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public static void testAirConditioner() {
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AirConditioner ac = new AirConditioner();
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// test the constructor
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System.out.println(ac.getPower() == false);
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System.out.println(ac.getMode() == 0);
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System.out.println(ac.getTemperature() == 16);
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// test the power functions
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ac.turnOn();
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System.out.println(ac.getPower() == true);
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ac.turnOff();
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System.out.println(ac.getPower() == false);
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// test the mode functions
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ac.setMode(1);
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System.out.println(ac.getMode() == 0);
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ac.turnOn();
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ac.setMode(5);
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System.out.println(ac.getMode() == 0);
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ac.setMode(2);
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System.out.println(ac.getMode() == 2);
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// test the temperature functions
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ac.turnOff();
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ac.setTemperature(20);
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System.out.println(ac.getTemperature() == 16);
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ac.turnOn();
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ac.setTemperature(20);
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System.out.println(ac.getTemperature() == 16);
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ac.setMode(1);
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ac.setTemperature(31);
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System.out.println(ac.getTemperature() == 16);
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ac.setTemperature(20);
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System.out.println(ac.getTemperature() == 20);
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}
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}
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@@ -0,0 +1,8 @@
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public class Start {
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public static void main(String[] args) {
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AirConditioner.testAirConditioner();
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}
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}
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