Field getDeclaringClass() method in Java with Examples
The getDeclaringClass() method of java.lang.reflect.Field is used to get the Class object which declares the field represented by this Field object. If Field object is present and we want to get the class object then we can get that class object using this method.
Syntax:
public Class<T> getDeclaringClass()
Parameters: This method accepts nothing.
Return value: This method returns an object representing the declaring class of the underlying member.
Below programs illustrate getDeclaringClass() method:
Program 1:
import java.lang.reflect.Field;
public class GFG {
public static void main(String[] args)
throws NoSuchFieldException,
SecurityException
{
Field field
= User. class
.getField( "identificationChar" );
Class declaringClass
= field.getDeclaringClass();
System.out.println( "Declaring Class"
+ " for Field Object: "
+ declaringClass);
}
}
class User {
public static char identificationChar = 'E' ;
public static char selectionChar = 'A' ;
public static String name = "Aman" ;
public static char getIdentificationChar()
{
return identificationChar;
}
public static void
setIdentificationChar( char identificationChar)
{
User.identificationChar = identificationChar;
}
public static char getSelectionChar()
{
return selectionChar;
}
public static void
setSelectionChar( char selectionChar)
{
User.selectionChar = selectionChar;
}
public static String getName()
{
return name;
}
public static void setName(String name)
{
User.name = name;
}
}
|
Output:
Declaring Class for Field Object: class User
Program 2:
import java.lang.reflect.Field;
import java.lang.reflect.Field;
public class GFG {
public static void main(String[] args)
throws NoSuchFieldException,
SecurityException
{
Field field
= Alphabets. class .getField( "value" );
Class declaringClass
= field.getDeclaringClass();
System.out.println( "Declaring Class: "
+ declaringClass);
}
static class Alphabets {
public static char value = 'Q' ;
public static char getValue()
{
return value;
}
public static void setValue( char value)
{
Alphabets.value = value;
}
}
}
|
Output:
Declaring Class: class GFG$Alphabets
References: https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Field.html#getDeclaringClass–
Last Updated :
26 Aug, 2019
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