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