Java Writer getClass()方法及示例

Java中 Writer 类的 getClass() 方法用于获取该Writer实例的父类。这个方法不接受任何参数，并返回所需的类的详细信息。

语法

public final Class String getClass()

参数： 该方法不接受任何参数。

返回值： 该方法返回 Class的详细信息 ，它是Writer实例的父类。

下面的方法说明了getClass()方法的工作。

程序 1 :

// Java program to demonstrate// Writer getClass() method import java.io.*; class GFG {    public static void main(String[] args)    {         try {             // Create a Writer instance            Writer writer                = new PrintWriter(System.out);             // Get the String            // to be written in the stream            String string = "GeeksForGeeks";             // Write the string            // to this writer using write() method            writer.write(string);             // Get Class details using getClass()            System.out.println("Parent Class: "                               + writer.getClass());        }        catch (Exception e) {            System.out.println(e);        }    }}

输出

Parent Class: class java.io.PrintWriter

程序2

// Java program to demonstrate// Writer getClass() method import java.io.*; class GFG {    public static void main(String[] args)    {         try {             // Create a Writer instance            Writer writer                = new OutputStreamWriter(System.out);             // Get the String            // to be written in the stream            String string = "GFG";             // Write the string            // to this writer using write() method            writer.write(string);             // Get Class details using getClass()            System.out.println("Parent Class: "                               + writer.getClass());        }        catch (Exception e) {            System.out.println(e);        }    }}

输出

Parent Class: class java.io.OutputStreamWriter