java.lang.Package类的getImplementationVendor()方法用于获取此包的实现供应商。该方法以字符串形式返回包的实现供应商。
用法:
public String getImplementationVendor()
参数:此方法不接受任何参数。
返回值:如果已知,此方法以String的形式返回包的实现供应商。否则返回null
下面的程序演示了getImplementationVendor()方法。
示例1:
// Java program to demonstrate
// getImplementationVendor() 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 vendor of myPackage
// using getImplementationVendor() method
System.out.println(
"Implementation vendor of myPackage: "
+ myPackage.getImplementationVendor());
}
}
输出:
Package represented by myPackage: package java.lang, Java Platform API Specification, version 1.8 Implementation vendor of myPackage: N/A
示例2:
// Java program to demonstrate
// getImplementationVendor() 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 getImplementationVendor() method
System.out.println(
"Implementation vendor of myPackage: "
+ myPackage.getImplementationVendor());
}
}
输出:
Package represented by myPackage: package java.io, Java Platform API Specification, version 1.8 Implementation vendor of myPackage: N/A
参考: https://docs.oracle.com/javase/9/docs/api/java/lang/Package.html#getImplementationVendor–
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