Iterate Map

From Java Example Source Code

[edit] Overview - Iterate Map

This Java example program introduce Iterate Map.

[edit] Java Source Code

• Package: example.systemproperties
• File: DumpProps.java

package example.systemproperties;
 
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
 
public class DumpProps {
    public static void main(String args[]) {
	Properties props = System.getProperties();
	Iterator iter = props.entrySet().iterator();
	while (iter.hasNext()) {
	    Map.Entry entry = (Map.Entry) iter.next();
	    System.out.println(entry.getKey() + " --- " + entry.getValue());
	}
 
	System.out.println("-------");
 
	Enumeration e = props.propertyNames();
	while (e.hasMoreElements()) {
	    String key = (String) e.nextElement();
	    System.out.println(key + " --- " + props.getProperty(key));
	}
    }
}

[edit] What Result You Can Get

Run the program, you will get:

java.runtime.name --- Java(TM) SE Runtime Environment
sun.boot.library.path --- D:\jdk\j2se\jre\bin
java.vm.version --- 1.6.0-b105
java.vm.vendor --- Sun Microsystems Inc.
java.vendor.url --- http://java.sun.com/
path.separator --- ;
java.vm.name --- Java HotSpot(TM) Client VM
file.encoding.pkg --- sun.io
sun.java.launcher --- SUN_STANDARD
user.country --- US
...

[edit] Required External Libraries and/or Files for this Java Example

Need nothing.

[edit] How to Run this Java Example Program

We recommend running this Java example program with Eclipse.

For assistance in working with Eclipse, please see How to Run Java Program with Eclipse.

It's fairly easy.

[edit] Question & Answer

Any question?

Click edit and post your question or answer here.