stringwriter

StringWriter類的toString()方法 (StringWriter Class toString() method)

• toString() method is available in java.io package.

  toString()方法在java.io包中可用。

• toString() method is used to represent the buffer current value in terms of string.

  toString()方法用于表示字符串形式的緩沖區當前值。

• toString() 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.

  toString()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• toString() method does not throw an exception at the time of returning buffer value.

  toString()方法在返回緩沖區值時不會引發異常。

Syntax:

句法：

    public String toString();

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 the method is String, it returns the string denotation of this StringWriter stream.

方法的返回類型為String ，它返回此StringWriter流的字符串表示形式。

Example:

例：

// Java program to demonstrate the example 
// of String toString() method of StringWriter
import java.io.*;
public class ToStringOfFSW {
public static void main(String[] args) throws Exception {
StringWriter str_w = null;
String str = "Java World!!!";
try {
// Instantiates StringWriter
str_w = new StringWriter();
str_w.write(str);
// By using toString() method is to
// represent the stream as a string
String s = str_w.toString();
System.out.println("str_w.toString(): " + s);
} catch (Exception ex) {
System.out.println(ex.toString());
} finally {
// with the help of this block is to
// free all necessary resources linked
// with the stream
if (str_w != null) {
str_w.close();
}
}
}
}

Output

輸出量

str_w.toString(): Java World!!!

翻譯自: https://www.includehelp.com/java/stringwriter-tostring-method-with-example.aspx

stringwriter