java url encode

### overview of url encoding

1. **purpose**: url encoding ensures that all characters in a url are valid and properly formatted. it replaces unsafe ascii characters with a "%" followed by two hexadecimal digits.
2. **characters to encode**:
- spaces are typically encoded as `%20` or `+` (the latter for query parameters).
- special symbols like `!`, `*`, `'`, `(`, and `)` are also encoded.
- non-ascii characters are encoded using their utf-8 representation.

### using `urlencoder` in java

the `urlencoder` class provides the `encode` method which you can use to encode strings. you can specify the character encoding (like utf-8) to ensure proper encoding of characters.

### example code

here's a simple example that demonstrates how to url encode a string in java:

### explanation of the code

1. **import statements**: we import `unsupportedencodingexception` for handling encoding issues and `urlencoder` for encoding urls.
2. **original string**: we define a string that contains spaces and non-ascii characters.
3. **encoding**: we use the `encode` method of `urlencoder` to encode the original string. we specify `"utf-8"` as the character encoding.
4. **output**: we print both the original and the encoded strings.

### output

when you run the above code, you would see an output like this:

### notes

- the encoded string will replace spaces with `+` but `%20` is also a valid encoding for spaces in urls. the choice depends on the context (e.g., query parameters).
- always specify a character encoding (utf-8 is preferred) when using `urlencoder` to avoid `unsupportedencodingexception`.
- to decode a url ...

#python encode json
#python encode bytes
#python encode string to bytes
#python encodeuricomponent
#python encode

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