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Class getDeclaredConstructors() method in Java with Examples

Last Updated : 12 Jul, 2025

The getDeclaredConstructors() method of java.lang.Class class is used to get the constructors of this class, which are the constructors that are private, public, protected or default. The method returns the constructors of this class in the form of array of Constructor objects. 
Syntax: 
 

public Constructor[] getDeclaredConstructors()
 throws SecurityException


Parameter: This method does not accept any parameter.
Return Value: This method returns the constructors of this class in the form of an array of Constructor objects. 
Exception This method throws SecurityException if a security manager is present and the security conditions are not met.
Below programs demonstrate the getDeclaredConstructors() method.
Example 1:
 


Output: 
Class represented by myClass: class Test
DeclaredConstructors of myClass: [public Test()]

 

Example 2:
 


Output: 
Class represented by myClass: class Main
DeclaredConstructors of myClass: [private Main()]

 

Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getDeclaredConstructors--
 

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