Constructors in Java

Class Employee {
Employee() {
System.out.println("Default Constructor is running");
name=null;
doj=null;
salary=0;
check=0;
}
Employee (String name,String d,long l) {
sample=sample+1;
check=check+1;
this.name=name;
this.doj=d;
this.salary=l;
}
}