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📜  Java.util.Formatter类

📅  最后修改于: 2020-11-14 06:16:10             🧑  作者: Mango

介绍

java.util.Formatter类提供了对布局对齐和对齐，数字，字符串和日期/时间数据的通用格式以及特定于语言环境的输出的支持。以下是有关Formatter的重点-

  • 格式化程序对于多线程访问不一定是安全的。线程安全是可选的，并且是此类中用户的责任。

类声明

以下是java.util.Formatter类的声明-

public final class Formatter
   extends Object
   implements Closeable, Flushable

类的构造函数

Sr.No. Constructor & Description
1

Formatter()

This constructor constructs a new formatter.
2

Formatter(Appendable a)

This constructor constructs a new formatter with the specified destination.
3

Formatter(Appendable a, Locale l)

This constructor constructs a new formatter with the specified destination and locale.
4

Formatter(File file)

This constructor constructs a new formatter with the specified file.
5

Formatter(File file, String csn)

This constructor constructs a new formatter with the specified file and charset.
6

Formatter(File file, String csn, Locale l)

This constructor constructs a new formatter with the specified file, charset, and locale.
7

Formatter(Locale l)

This constructor constructs a new formatter with the specified locale.
8

Formatter(OutputStream os)

This constructor constructs a new formatter with the specified output stream.
9

Formatter(OutputStream os, String csn)

This constructor constructs a new formatter with the specified output stream and charset.
10

Formatter(OutputStream os, String csn, Locale l)

This constructor constructs a new formatter with the specified output stream, charset, and locale.
11

Formatter(PrintStream ps)

This constructor constructs a new formatter with the specified print stream.
12

Formatter(String fileName)

This constructor constructs a new formatter with the specified file name.
13

Formatter(String fileName, String csn)

This constructor constructs a new formatter with the specified file name and charset.
14

Formatter(String fileName, String csn, Locale l)

This constructor constructs a new formatter with the specified file name, charset, and locale.

类方法

Sr.No. Method & Description
1 void close()

This method closes this formatter.
2 void flush()

This method flushes this formatter.
3 Formatter format(Locale l, String format, Object… args)

This method writes a formatted string to this object’s destination using the specified locale, format string, and arguments.
4 Formatter format(String format, Object… args)

This method writes a formatted string to this object’s destination using the specified format string and arguments.
5 IOException ioException()

This method returns the IOException last thrown by this formatter’s Appendable.
6 Locale locale()

This method returns the locale set by the construction of this formatter.
7 Appendable out()

This method returns the destination for the output.
8 String toString()

This method returns the result of invoking toString() on the destination for the output.

方法继承

此类从以下类继承方法-

  • java.util.Object