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Employee Details in java

CONCEPT:- We want to save data securely,
     Requirements:
                          1.local variable defined as a public
                          2.Setter it is used to controller shift to the variables
                          3. Getter it is used to return the value to a constructor
                          4. we got the getter value,we did not understand,we need to  value converted,so we                                    use toString 
                          5.whether Entered data is correct or not as per stored data at the time we write logic
                              public public boolean equals(Object obj)
                          6.we want access object Employee e2=(Employee)obj;
  see example easily Understand :
public class Employee
{
private int id;
private String firstname;
private String lastname;
private String fathername;
public Employee(int id,String firstname,String lastname,String fathername)
{
this.id=id;
this.firstname=firstname;
this.lastname=lastname;
this.fathername=fathername;
}

public void setId(int id)
{
this.id=id;
}
public void setFirstname(String firstname)
{
this.firstname=firstname;
}
public void setLastname(String lastname)
{
this.lastname=lastname;
}
public void setFathername(String fastname)
{
this.fathername=fathername;
}
public int getId()
{
return id;
}
public String getFirstname()
{
return firstname;
}
public String getLastname()
{
return lastname;
}
public String getFathername()
{
return fathername;
}

public String toString()
{
return id+":"+firstname+":"+lastname+":"+fathername;
}
public boolean equals(Object obj)
{
Employee e2=(Employee)obj;
if(id==e2.id&&firstname.equals(e2.firstname)&&lastname.equals(e2.lastname)&&fathername.equals(e2.fathername))
return true;
else
return false;
}
public static void main(String[] args)
{
Employee e1=new Employee(222,"udaykiran","g","mallesh");
Employee e2=new Employee(222,"udaykiran","g","mallesh");
Employee e4=new Employee(222,"udaykiran","g","mallesh");
boolean a=e1.equals(e2);
Employee[] employees={e1,e2,e4};
for(Employee e:employees)
{
int id=e.getId();
String fi=e.getFirstname();
String la=e.getLastname();
String fa=e.getFathername();
System.out.print(id);
System.out.println("\t"+fi);
System.out.println("\t"+la);
System.out.println(fa);
}System.out.println(e4);
System.out.println(a);
}

}





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