What is the output of this program
class Person{
String name;
Person(){
name="John";
}
}
class Employee extends Person{
int age;
Employee(){
age=34;
}
}
class Customer extends Person{
int salary;
Customer(int salary){
this.salary=salary;
name="Maddy";
}

public void displayDetails(){
System.out.println(name+age+salary);
}
}
class Account {
public static void main(String[] args) {
Customer c=new Customer(20000);
c.displayDetails();
}
}

Question

What is the output of this program 
 class Person{ 
  String name; 
  Person(){ 
  name="John"; 
  } 
 } 
 class Employee extends Person{ 
  int age; 
  Employee(){ 
  age=34; 
  } 
 } 
 class Customer extends Person{ 
  int salary; 
  Customer(int salary){ 
 this.salary=salary; 
  name="Maddy"; 
  } 
   
  public void displayDetails(){ 
  System.out.println(name+age+salary); 
  } 
 } 
 class Account { 
  public static void main(String[] args) { 
  Customer c=new Customer(20000); 
  c.displayDetails(); 
  } 
 }

Answer

Compilation fail “Person cannot have two child classes i.e. Employee and Customer”

Answer

Code executes successfully and display “Maddy3420000”

Answer

Compilation fail “the variable age is not accessible from displayDetails method ”

Answer

Code executes successfully and display “John3420000”

Crowdly

What is the output of this program class Person{ String name; Person(){ ...

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