Get Field value by field name


import java.lang.reflect.Field;

public class Main {

    public static void main(String[] unused) throws Exception{
        Object o = new MyClass();
        System.out.println(intFieldValue(o, "currentYear"));
    }

    static int intFieldValue(Object o, String name) throws Exception{
        Class c = o.getClass();
        Field fld = c.getField(name);
        int value = fld.getInt(o);
        return value;
    }
}

class MyClass {
    public int currentYear = 2012;
}
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Reflection Field:
  1. Get all fields
  2. Get all Declared Fields
  3. Get annotations for a Field
  4. Get "public static final" field
  5. Get specific fields
  6. Get Field value by field name
  7. Get fields for super class
  8. Get Inherited Methods and fields
  9. Get Type of the field or return type of a method.
  10. Field modifiers: isSynthetic, isEnumConstant
  11. Set field value
  12. Set null to a field value
  13. Set private field value