参考链接： Python | 输出格式化 output format

格式化程序类toString()方法 (Formatter Class toString() method) 

 toString() method is available in java.util package. toString()方法在java.util包中可用。 toString() method is for the string representation of this Formatter. toString()方法用于此Formatter的字符串表示形式。 toString() method is a non-static method, it is accessible with the class object and if we try to access the method with the class name then we will get an error. toString()方法是一种非静态方法，可通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。 toString() method may throw an exception at the time of string representation of this Formatter. 在此Formatter的字符串表示形式时， toString()方法可能会引发异常。  FormatterClosedException: This exception may throw when this formatter close by calling its close() method. FormatterClosedException ：当此格式化程序通过调用其close()方法关闭时，可能会抛出此异常。  

 Syntax: 

  句法：  

     public String toString();

 

 

 Parameter(s): 

  参数：  

 It does not accept any parameter. 它不接受任何参数。 

 Return value: 

  返回值：  

 The return type of this method is String, it works on the destination for the output. 

  此方法的返回类型为String ，它在输出的目标上起作用。  

 Example: 

  例：  

 // Java program is to demonstrate the example of

// toString() method of Formatter

 

import java.util.*;

 

public class ToStringOfFormatter {

    public static void main(String[] args) {

        // Instantiates a StringBuffer and Formmatter

        // object

        StringBuffer sb = new StringBuffer();

        Formatter formatt = new Formatter(sb, Locale.UK);

 

        // By using format() method is to format

        // a string

        formatt.format("Hi %s !", "IncludeHelp");

 

        // Display Formatted String

        System.out.println(formatt);

 

        // By using toString() method is to

        // represent the string formatted by

        // this Formatter

        System.out.println("formatt.toString(): " + formatt.toString());

    }

}

 

 

 Output 

  输出量  

 Hi IncludeHelp !

formatt.toString(): Hi IncludeHelp !

 

 

 

 

  翻译自: https://www.includehelp.com/java/formatter-tostring-method-with-example.aspx