用示例在Java中封装 isCompatibleWith() 方法
Java.lang.Package 类的isCompatibleWith()方法用于检查该包的规范版本是否与指定版本兼容。该方法将结果作为布尔值返回。
句法:
public boolean isCompatibleWith(String desiredVersion)
参数:此方法接受参数desiredVersion ,该参数是要检查兼容性的版本。
返回值:此方法将结果作为布尔值返回。
下面的程序演示了 isCompatibleWith() 方法。
示例 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));
}
}
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));
}
}
输出:
Package represented by myPackage: package java.lang, Java Platform API Specification, version 1.8
Is this package compatible with or not: true
示例 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));
}
}
输出:
Package represented by myPackage: package java.io, Java Platform API Specification, version 1.8
Is this package compatible with or not: true
参考: https://docs.oracle.com/javase/9/docs/api/ Java/lang/Package.html#isCompatibleWith-java.lang.String-