implementation java_Java Package getImplementationTitle()用法及代码示例

java.lang.Package类的getImplementationTitle()方法用于获取此包的实现的标题。该方法以字符串形式返回包的实现标题。

用法:

public String getImplementationTitle()

参数：此方法不接受任何参数。

返回值：如果已知，此方法以String形式返回包的实现标题。否则返回null

下面的程序演示了getImplementationTitle()方法。

示例1:

// Java program to demonstrate

// getImplementationTitle() 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());

// Get the implementation title of myPackage

// using getImplementationTitle() method

System.out.println(

"Implementation title of myPackage: "

+ myPackage.getImplementationTitle());

}

}

输出：

Package represented by myPackage: package java.lang, Java Platform API Specification, version 1.8

Implementation title of myPackage: Java Runtime Environment

示例2:

// Java program to demonstrate

// getImplementationTitle() 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());

// Get the name of myPackage

// using getImplementationTitle() method

System.out.println(

"Implementation title of myPackage: "

+ myPackage.getImplementationTitle());

}

}

输出：

Package represented by myPackage: package java.io, Java Platform API Specification, version 1.8

Implementation title of myPackage: Java Runtime Environment