Java Writer toString()方法及示例

Java中 Writer 类的 toString() 方法是用来获取这个Writer实例的字符串表示。这个方法不接受任何参数，并返回所需的字符串值。

语法

public String toString()

参数： 该方法不接受任何参数。

返回值： 该方法返回 一个字符串值 ，即Writer实例的字符串表示。

下面的方法说明了toString()方法的工作。

程序 1 :

// Java program to demonstrate// Writer toString() 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);             System.out.println("String representation: "                               + writer.toString());        }        catch (Exception e) {            System.out.println(e);        }    }}

输出

String representation: java.io.PrintWriter@232204a1

程序2

// Java program to demonstrate// Writer toString() 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 = "GFG";             // Write the string            // to this writer using write() method            writer.write(string);             System.out.println("String representation: "                               + writer.toString());        }        catch (Exception e) {            System.out.println(e);        }    }}

输出

String representation: java.io.PrintWriter@232204a1