Class getDeclaredConstructors() method in Java with Examples Last Updated : 05 Jun, 2021 Summarize Comments Improve Suggest changes Share Like Article Like Report 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: Java // Java program to demonstrate // getDeclaredConstructors() method import java.util.*; public class Test { public static void main(String[] args) throws ClassNotFoundException { // returns the Class object for this class Class myClass = Class.forName("Test"); System.out.println("Class represented by myClass: " + myClass.toString()); // Get the constructors of myClass // using getDeclaredConstructors() method System.out.println( "DeclaredConstructors of myClass: " + Arrays.toString( myClass.getDeclaredConstructors())); } } Output: Class represented by myClass: class Test DeclaredConstructors of myClass: [public Test()] Example 2: Java // Java program to demonstrate //getDeclaredConstructors() method import java.util.*; class Main { public Object obj; private Main() { class Arr { }; obj = new Arr(); } public static void main(String[] args) throws ClassNotFoundException { // returns the Class object for this class Class myClass = Class.forName("Main"); System.out.println("Class represented by myClass: " + myClass.toString()); // Get the constructors of myClass // using getDeclaredConstructors() method System.out.println( "DeclaredConstructors of myClass: " + Arrays.toString( myClass.getDeclaredConstructors())); } } 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-- Comment More infoAdvertise with us Next Article Class getEnclosingConstructor() method in Java with Examples S srinam Follow Improve Article Tags : Java Java-lang package Java-Functions Java.lang.Class Practice Tags : Java Similar Reads Class getDeclaredConstructor() method in Java with Examples The getDeclaredConstructor() method of java.lang.Class class is used to get the specified constructor of this class with the specified parameter type. The method returns the specified constructor of this class in the form of Constructor object. Syntax: public Constructor<T> getDeclaredConstruc 2 min read Class getConstructors() method in Java with Examples The getConstructors() method of java.lang.Class class is used to get the constructors of this class, which are the constructors that are public. The method returns the constructors of this class in the form of array of Constructor objects. Syntax: public Constructor[] getConstructors() Parameter: Th 2 min read Class getConstructor() method in Java with Examples The getConstructor() method of java.lang.Class class is used to get the specified constructor of this class with the specified parameter type, which is the constructor that is public and its members. The method returns the specified constructor of this class in the form of Constructor object. Syntax 2 min read Class getEnclosingConstructor() method in Java with Examples The getEnclosingConstructor() method of java.lang.Class class is used to get the enclosing constructors of this class. The method returns the enclosing constructors of this class, if this class is a local class or anonymous class declared in that constructor. Else this method returns null.Syntax: pu 2 min read Class getDeclaredAnnotations() method in Java with Examples The getDeclaredAnnotations() method of java.lang.Class class is used to get the declared annotations present in this class. The method returns an array of declared annotations present. Syntax: public DeclaredAnnotation[] getDeclaredAnnotations() Parameter: This method does not accepts any parameter. 2 min read Class getDeclaredClasses() method in Java with Examples The getDeclaredClasses() method of java.lang.Class class is used to get the classes of this class, which are the classes that are private, public, protected or default and its members, but not the inherited ones. The method returns the classes of this class in the form of array of Class objects. Syn 2 min read Like