JavaQuick Tip: How to Remove a System Property in Java

Quick Tip: How to Remove a System Property in Java

Java Developer Tutorials

In this Java programming quick tip tutorial, developers will learn how to remove a system property using the System.getProperty method. This technique is illustrated in the Java code example below:

*/

import java.util.*;

public class DoubleBraces {
	
	public static void main(String[] args) 
	{  
		DoubleBraces doubleBraces = new DoubleBraces();
		doubleBraces.proceed();
	}

	private void proceed()  
	{
		//Ideal way of initializing the arrayList
		List arrayList = new ArrayList();
		arrayList.add("One");
		arrayList.add("Two");
		arrayList.add("Three");
		
		//Initializing using the double braces way {{ }}
		List arrayList2 = new ArrayList() {{
			add("One");
			add("Two");
			add("Three");
		}};
		
		System.out.println("ArrayList initialized the ideal way: " + arrayList);
		System.out.println("ArrayList initialized the double braces way: " + arrayList2);

	}
}

/*

Running this code example will result in the following output:

[[email protected]]# java DoubleBraces
ArrayList initialized the ideal way: [One, Two, Three]
ArrayList initialized the double braces way: [One, Two, Three]

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