Whenever an instance is created in the method, it is called the constructor of that particular class and is executed by default.
If the user has not written/provided any constructor, the compiler will automatically insert the empty constructor.
A method name similar to its respective class name and method does not return any value.
Overloading is possible but not overriding.
The following is an example of a constructor chain in a Java program:
package MyFirstPackage;
class SampleClass4 {
SampleClass4(){
System.out.println("executing sample meathod");
}
}
class SampleClass3 extends SampleClass4 {
SampleClass3(){
System.out.println("executing sample method 2");
}
}
public class Constructors {
public static void main(String[] args) {
new SampleClass3();
}
}The output for the preceding code is as follows:
executing sample meathod executing sample method 2