Java Reflection - Java Class.getDeclaredFields()

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Syntax

Class.getDeclaredFields() has the following syntax.

public Field [] getDeclaredFields()    throws SecurityException

Example

In the following code shows how to use Class.getDeclaredFields() method.

import java.lang.reflect.Field;
//from   w w  w  .j  a  v  a  2  s  .c  om
public class Main {

  public static void main(String[] args) {

    try {
      MyClass c = new MyClass();
      Class cls = c.getClass();

      // returns the array of Field objects
      Field[] fields = cls.getDeclaredFields();
      for (int i = 0; i < fields.length; i++) {
        System.out.println("Field = " + fields[i].toString());
      }
    } catch (Exception e) {
      System.out.println(e.toString());
    }
  }
}

class MyClass {
  public MyClass() {
    // no argument constructor
  }

  public MyClass(long l, int i) {
    this.l = l;
    this.i = i;
  }

  long l = 77688;
  int i = 3;
}

The code above generates the following result.

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