java jar包示例

包類的getImplementationTitle()方法 (Package Class getImplementationTitle() method)

• getImplementationTitle() method is available in java.lang package.

  getImplementationTitle()方法在java.lang包中可用。

• getImplementationTitle() method is used to retrieve the implementation title of the package and we know that every package has some specialization and implementation title.

  使用getImplementationTitle()方法檢索包的實現標題，并且我們知道每個包都有一些專門化和實現標題。

• getImplementationTitle() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  getImplementationTitle()方法是一種非靜態方法，僅可通過類對象訪問，如果嘗試使用類名訪問該方法，則會收到錯誤消息。

• getImplementationTitle() method does not throw an exception at the time of returning the title of the package.

  返回包的標題時， getImplementationTitle()方法不會引發異常。

Syntax:

句法：

    public String getImplementationTitle();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of this method is String, it returns the following values based on the given cases,

此方法的返回類型為String ，它根據給定的情況返回以下值：

• It returns the title of the package when exists.

  如果存在，它將返回包的標題。

• It returns null, when no title of the package exists.

  當包的標題不存在時，它返回null。

Example:

例：

// Java program to demonstrate the example 
// of String getImplementationTitle()
// of Package method
public class GetImplementationTitle {
public static void main(String[] args) {
// Get Package by using getPackage() method
Package pkg = Package.getPackage("java.util");
// Get implementation title of the package by using 
// getImplementationTitle() and stored in a variable
// called ititle
String ititle = pkg.getImplementationTitle();
// Display title of the package
System.out.print("Package Title: ");
System.out.print(ititle);
}
}

Output

輸出量

Package Title: Java Runtime Environment

翻譯自: https://www.includehelp.com/java/package-getimplementationtitle-method-with-example.aspx

java jar包示例