Java Writer getClass()用法及代碼示例

Java中的Writer類的getClass()方法用於獲取此Writer實例的父類。此方法不接受任何參數，並返回所需的Class詳細信息。

用法:

public final Class String getClass()

參數：此方法接受不接受任何參數。

返回值：此方法返回Class詳細信息，它是Writer實例的父Class。

下麵的方法說明了getClass()方法的用法方式：

示例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 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); 
        } 
    } 
}

輸出：

Parent Class: class java.io.PrintWriter

示例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 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); 
        } 
    } 
}

輸出：

Parent Class: class java.io.OutputStreamWriter

相關用法

注：本文由純淨天空篩選整理自Code_r大神的英文原創作品 Writer getClass() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。