Package isCompatibleWith() method in Java with Examples

The isCompatibleWith() method of java.lang.Package class is used to check if this package’s specification version is compatible with the specified version or not. The method returns the result as a boolean value.
Syntax:

public boolean isCompatibleWith(String desiredVersion)

Parameter: This method accepts a parameter desiredVersion which is the version to be checked for compatibility.
Return Value: This method returns the result as a boolean value.
Below programs demonstrate the isCompatibleWith() method.
Example 1:

Java

// Java program to demonstrate
// isCompatibleWith() method

public 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());

        String desiredVersion = "1.5";

        // check if this package is compatible with or not
        // using isCompatibleWith() method
        System.out.println(
            "Is this package compatible with or not: "
            + myPackage.isCompatibleWith(desiredVersion));
    }
}

Output:

Package represented by myPackage: package java.lang, Java Platform API Specification, version 1.8
Is this package compatible with or not: true

Example 2:

Java

// Java program to demonstrate
// isCompatibleWith() method

public 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());

        String desiredVersion = "1.0";

        // check if this package is compatible with or not
        // using isCompatibleWith() method
        System.out.println(
            "Is this package compatible with or not: "
            + myPackage.isCompatibleWith(desiredVersion));
    }
}

Output:

Package represented by myPackage: package java.io, Java Platform API Specification, version 1.8
Is this package compatible with or not: true

Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Package.html#isCompatibleWith-java.lang.String-