The getSpecificationVersion() method of java.lang.Package class is used to get the version of the specification of this package. The method returns the specification version of the package as a String.
Syntax:
public String getSpecificationVersion()
Parameter: This method does not accept any parameter.
Return Value: This method returns the specification version of the package as a String, if known. Else it returns null
Below programs demonstrate the getSpecificationVersion() method.
Example 1:
Java
// Java program to demonstrate// getSpecificationVersion() methodpublic class Test { public static void main(String[] args) { // returns the Package object // for this package Package myPackage = Package.getPackage("java.lang"); System.out.println( "Package represented by myPackage: " + myPackage.toString()); // Get the specification version of myPackage // using getSpecificationVersion() method System.out.println( "Specification version of myPackage: " + myPackage.getSpecificationVersion()); }} |
Output:
Package represented by myPackage: package java.lang, Java Platform API Specification, version 1.8 Specification version of myPackage: 1.8
Example 2:
Java
// Java program to demonstrate// getSpecificationVersion() methodpublic class Test { public static void main(String[] args) { // returns the Package object // for this package Package myPackage = Package.getPackage("java.io"); System.out.println( "Package represented by myPackage: " + myPackage.toString()); // Get the name of myPackage // using getSpecificationVersion() method System.out.println( "Specification version of myPackage: " + myPackage.getSpecificationVersion()); }} |
Output:
Package represented by myPackage: package java.io, Java Platform API Specification, version 1.8 Specification version of myPackage: 1.8
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Package.html#getSpecificationVersion–