Not compiling please help...

public class lab7 {

class Employee{

String name = "name";

int id;

Employee(String name, int id){

this.id=id;

this.name=name;

}

double getSalary(){//getSalary method must present in Employee class

return 0;

}

public String toString(){

return "Name: "+name+", Id: "+id;

}

}

class Full extends Employee{

double salary;

public Full(String name, int id, double salary){

super(name, id);

this.salary=salary;

}

double getSalary(){

return salary;

}

public String toString(){

return super.toString()+", Salary:"+salary;

}

}

class Part extends Employee{

double hours, hourlyWage;

public Part(String name, int id, double hours, double hourlyWage){

super(name, id);

this.hours = hours;

this.hourlyWage = hourlyWage;

}

double getSalary(){

return hours*hourlyWage;

}

public String toString(){

return super.toString()+", Hours: "+hours+", HourlyWage: "+hourlyWage;

}

}

class lab7 {

//create method creates objects for part and full classes and stores in employee array and returns number of objects stored in array.

public static int create(Employee employee[]){

int i = 0;

employee[i++] = new Part("John", 001, 10.0, 9.5);

employee[i++] = new Part("Kane", 002, 6.65, 8.3);

employee[i++] = new Full("Steven", 007, 50000);

employee[i++] = new Full("Cameron", 8, 65000);

return i;

}