java urlencoder encode

### what is url encoding?

url encoding replaces unsafe ascii characters with a "%" followed by two hexadecimal digits. for example, a space character is encoded as `%20`. this ensures that the data can be safely transmitted as part of a url query string or path.

### when to use url encoding

you should use url encoding when:
- you need to include query parameters in a url.
- you are sending data via http get or post methods that might include special characters (like spaces, &, =, etc.).

### using `urlencoder`

the `urlencoder` class provides a static method `encode(string s, string charset)` to encode strings. the `charset` parameter specifies the character encoding to be used for encoding.

### basic example

here’s a simple example that demonstrates how to use `urlencoder` to encode a string:

### explanation of the code

2. **original string**: we define a string (`originalstring`) that contains characters that need to be encoded.

3. **encoding the string**:
- we specify `"utf-8"` as the character set, which is a commonly used encoding.

4. **print results**: finally, we print both the original and encoded strings.

5. **exception handling**: we handle `unsupportedencodingexception`, which may occur if the specified character encoding is not supported.

### output

when you run the above code, the output will look something like this:

### important notes

- the space character is encoded as `+` in query ...

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