- Java.util Package Classes
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- Java.util - Locale
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- Java.util - Properties
- Java.util - PropertyPermission
- Java.util - PropertyResourceBundle
- Java.util - Random
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- Java.util - ServiceLoader
- Java.util - SimpleTimeZone
- Java.util - Stack
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- Java.util - TimeZone
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- Java.util - TreeSet
- Java.util - UUID
- Java.util - Vector
- Java.util - WeakHashMap
- Java.util Package Extras
- Java.util - Interfaces
- Java.util - Exceptions
- Java.util - Enumerations
- Java.util Useful Resources
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- Java.util - Discussion
Java.util.Properties.stringPropertyNames() Method
Description
The java.util.Properties.stringPropertyNames() method returns a set of keys in this property list where the key and its corresponding value are strings, including distinct keys in the default property list if a key of the same name has not already been found from the main properties list. Properties whose key or value is not of type String are omitted.
Declaration
Following is the declaration for java.util.Properties.stringPropertyNames() method
public Set<String> stringPropertyNames()
Parameters
NA
Return Value
This method returns a set of keys in this property list where the key and its corresponding value are strings, including the keys in the default property list.
Exception
NA
Example
The following example shows the usage of java.util.Properties.stringPropertyNames() method.
package com.tutorialspoint; import java.util.*; public class PropertiesDemo { public static void main(String[] args) { Properties prop = new Properties(); // add some properties prop.put("Height", "200"); prop.put("Width", "15"); // save the Property names in the set Set<String> set = prop.stringPropertyNames(); // print the set System.out.println("" + set); } }
Let us compile and run the above program, this will produce the following result −
[Width, Height]