Code:
I have the following class.
package pd.tutorials.practice;
I have the following class.
package pd.tutorials.practice;
public class Employee {
public String name;
public double salary;
public int age;
public String employeeId;
static{
System.out.println("static block called");
}
public Employee()
{
System.out.println("Employee constructor called");
}
public Employee(String name1, double salary, int age, String employeeId)
{
name = name1;
this.salary = salary;
this.age = age;
this.employeeId = employeeId;
}
//overriden method
public String toString() {
return name + ", " + salary + ", " + age + ", " + employeeId;
}
}
package pd.tutorials.practice;
public class TryCollections {
public static void main(String a[]) {
try {
// loads the class. calls static block
Class.forName("pd.tutorials.Employee");
//define type of constructor a class may have
Class[] paramType = {String.class, Double.TYPE,
Integer.TYPE, String.class};
//asking if the class has the constructor type defined above
Constructor<Employee> con = Employee.class.getConstructor(paramType);
System.out.println("No error means...found the constructor");
//if constructor is found, create values to pass to constructor
Object [] paramValues = {"Pratik Dave",
new Double(10000),
30,
"539622"
};
// calls the constructor
Employee emp = con.newInstance(paramValues);
System.out.println(emp.age);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
