java.lang.reflect.Field.getDeclaringClass() Method Example


Advertisements

Description

The java.lang.reflect.Field.getDeclaringClass() method returns the Class object representing the class or interface that declares the field represented by this Field object.

Declaration

Following is the declaration for java.lang.reflect.Field.getDeclaringClass() method.

public Class<T> getDeclaringClass()

Returns

an object representing the declaring class of the underlying member.

Example

The following example shows the usage of java.lang.reflect.Field.getDeclaringClass() method.

package com.tutorialspoint;

import java.lang.annotation.Annotation;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Field;

public class FieldDemo {

   public static void main(String[] args) throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
      Field field = SampleClass.class.getField("sampleField");
      Class declaringClass = field.getDeclaringClass();
      System.out.println(declaringClass.getName());
   }
}

@CustomAnnotation(name = "SampleClass",  value = "Sample Class Annotation")
class SampleClass {

   @CustomAnnotation(name="sampleClassField",  value = "Sample Field Annotation")
   public String sampleField;
    
   public String getSampleField() {
      return sampleField;
   }

   public void setSampleField(String sampleField) {
      this.sampleField = sampleField;
   }
}

@Retention(RetentionPolicy.RUNTIME)
@interface CustomAnnotation {
   public String name();
   public String value();
}

Let us compile and run the above program, this will produce the following result −

com.tutorialspoint.SampleClass
java_reflect_field.htm
Advertisements