java reflection get static field value

java reflection is a powerful feature that allows you to inspect and manipulate classes, methods, fields, and other components at runtime. one common use of reflection is to access static fields of a class. in this tutorial, we'll explore how to use java reflection to get the value of a static field.

### prerequisites
- basic understanding of java programming.
- familiarity with concepts of classes and fields.

### step-by-step guide

1. **create a sample class with static fields**: first, we need a class that contains static fields. let's create a simple class named `config` with a static field.

2. **accessing static fields using reflection**: we will now write a method that uses reflection to get the value of the static fields from the `config` class.

### code example

here is a complete example demonstrating how to use reflection to get the static field values:

### explanation of the code


- **getfield("field_name")**: this method retrieves the `field` object that represents the specified public static field of the class. if the field is not found, a `nosuchfieldexception` is thrown.

### error handling
the code includes error handling for the following exceptions:
- `classnotfoundexception`: thrown if the class cannot be found.
- `nosuchfieldexception`: thrown if the specified field does not exist.
- `illegalaccessexception`: thrown if the field is not accessible (though in this example, the fields are public).

### conclusion
using ...

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