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Java Fundamental Classes Reference

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The java.net Package
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URLEncoder

Name

URLEncoder

Synopsis

Class Name:

java.net.URLEncoder

Superclass:

java.lang.Object

Immediate Subclasses:

None

Interfaces Implemented:

None

Availability:

JDK 1.0 or later

Description

The URLEncoder class defines a single static method that converts a String to its URL-encoded form. More precisely, the String is converted to a MIME type called x-www-form-urlencoded.

This is the format used when posting forms on the Web. The algorithm leaves letters, numbers, and the dash (-), underscore ( _ ), period (.), and asterisk (*) characters unchanged. Space characters are converted to plus signs (+). All other characters are encoded with a percent sign (%) followed by the character code represented as a two-digit hexadecimal number. For example, consider the following string:

Jean-Louis Gassée

This string gets encoded as:

Jean-Louis+Gas%8ee

The point of the URLEncoder class is to provide a way to canonicalize a string into an extremely portable subset of ASCII that can be handled properly by computers around the world.

Class Summary

public class java.net.URLEncoder extends java.lang.Object {
  // Class Methods
  public static String encode(String s);
}

Class Methods

encode

public static String encode(String s)

Parameters

s

The string to encode.

Returns

A URL-encoded string.

Description

This method returns the contents of the String in the x-www-form-urlencoded format.

Inherited Methods

Method Inherited From Method Inherited From

clone()

Object

equals(Object)

Object

finalize()

Object

getClass()

Object

hashCode()

Object

notify()

Object

notifyAll()

Object

toString()

Object

wait()

Object

wait(long)

Object

wait(long timeout, int nanos)

Object

   

See Also

String, URL


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