| 6. 2. 2. Using System.getProperty(String key) to retrieve system properties |
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- This method returns the value of the specified property.
- It returns null if the specified property does not exist.
- Each property comes as a key/value pair.
- There are system properties and user-defined properties.
- When a Java program runs, the JVM provides values that may be used by the program as properties.
- For example, the os.name system property provides the name of the operating system running the JVM.
- To get the value of the user.dir property, you use:
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public class MainClass{
public static void main(String[] args){
System.out.println(System.getProperty ("user.dir"));
}
}
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C:\Java_Dev\eclipse31\Apache Common |