PatternSingleton: Initial commit
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6
System Development/PatternSingleton/.classpath
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System Development/PatternSingleton/.classpath
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>
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System Development/PatternSingleton/.project
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System Development/PatternSingleton/.project
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>PatternSingleton</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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public class PatternSingleton {
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public static void main(String[] args) {
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//Get the only object available
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Singleton object = Singleton.getInstance();
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//show the message
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object.showMessage();
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}
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}
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19
System Development/PatternSingleton/src/Singleton.java
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19
System Development/PatternSingleton/src/Singleton.java
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public class Singleton {
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//create an object of SingleObject
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private static Singleton instance = new Singleton();
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//make the constructor private so that this class cannot be
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//instantiated
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private Singleton(){}
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//Get the only object available
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public static Singleton getInstance(){
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return instance;
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}
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public void showMessage(){
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System.out.println("There can be only One!");
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}
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}
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