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Design Patterns
1 parent 0da8cea commit 6ea769f

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‎src/main/java/com/design/patterns/behavioral/oberver/Device.java‎

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package com.design.patterns.behavioral.oberver;
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public interface Device {
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void updateMessage(String message);
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}

‎src/main/java/com/design/patterns/behavioral/oberver/ObserverPatternTest.java‎

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package com.design.patterns.behavioral.oberver;
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public class ObserverPatternTest {
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public static void main(String[] args) {
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WeatherUpdate weatherUpdate=new WeatherUpdate();
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PhoneDevice phoneDevice=new PhoneDevice();
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WatchDevice watchDevice=new WatchDevice();
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weatherUpdate.addDevice(phoneDevice);
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weatherUpdate.addDevice(watchDevice);
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weatherUpdate.updateWeather("Cloudy");
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weatherUpdate.removeDevice(watchDevice);
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weatherUpdate.updateWeather("Rainy");
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}
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}

‎src/main/java/com/design/patterns/behavioral/oberver/PhoneDevice.java‎

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package com.design.patterns.behavioral.oberver;
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public class PhoneDevice implements Device{
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@Override
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public void updateMessage(String message) {
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System.out.println("Getting Message on Phone:"+message);
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}
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}

‎src/main/java/com/design/patterns/behavioral/oberver/WatchDevice.java‎

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package com.design.patterns.behavioral.oberver;
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public class WatchDevice implements Device{
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@Override
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public void updateMessage(String message) {
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System.out.println("Getting message on Watch:"+message);
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}
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}

‎src/main/java/com/design/patterns/behavioral/oberver/Weather.java‎

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package com.design.patterns.behavioral.oberver;
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public interface Weather {
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void updateWeather(String message);
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}

‎src/main/java/com/design/patterns/behavioral/oberver/WeatherUpdate.java‎

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package com.design.patterns.behavioral.oberver;
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import java.util.ArrayList;
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import java.util.List;
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public class WeatherUpdate implements Weather{
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List<Device> devices;
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public WeatherUpdate()
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{
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this.devices=new ArrayList<>();
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}
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public void addDevice(Device device)
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{
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this.devices.add(device);
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}
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public void removeDevice(Device device)
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{
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System.out.println("Removing Device:"+device);
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this.devices.remove(device);
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}
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@Override
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public void updateWeather(String message) {
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for(Device device:devices)
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{
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device.updateMessage(message);
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}
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}
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}

‎target/classes/com/design/patterns/Main.class‎

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‎target/classes/com/design/patterns/behavioral/oberver/Device.class‎

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‎target/classes/com/design/patterns/behavioral/oberver/ObserverPatternTest.class‎

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‎target/classes/com/design/patterns/behavioral/oberver/PhoneDevice.class‎

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