The getImplementationVersion() method of java.lang.Package class is used to get the version of the implementation of this package. The method returns the implementation version of the package as a String.
Syntax:
public String getImplementationVersion()
Parameter: This method does not accept any parameter.
Return Value: This method returns the implementation version of the package as a String, if known. Else it returns null
Below programs demonstrate the getImplementationVersion() method.
Example 1:
Java
// Java program to demonstrate// getImplementationVersion() 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 implementation version of myPackage // using getImplementationVersion() method System.out.println( "Implementation version of myPackage: " + myPackage.getImplementationVersion()); }} |
Output:
Package represented by myPackage: package java.lang, Java Platform API Specification, version 1.8 Implementation version of myPackage: 1.8.0_181
Example 2:
Java
// Java program to demonstrate// getImplementationVersion() 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 getImplementationVersion() method System.out.println( "Implementation version of myPackage: " + myPackage.getImplementationVersion()); }} |
Output:
Package represented by myPackage: package java.io, Java Platform API Specification, version 1.8 Implementation version of myPackage: 1.8.0_181
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Package.html#getImplementationVersion–
