How the heck to you run a class more than once?

Question

Hello,
I'm new to Java and have spent many frustrating hours on this program, (yeah I know, pathetic), but I can't get this program to run. I think that the problem lies in calling more than one object. The compiler says that the object has already been defined, by when I change it gives me the same message. Here is the message-
java:35: data is already defined in main(java.lang.String[])
          C24001_PersonalInformation data = new C24001_PersonalInformation();
java:41: cannot resolve symbol
symbol : variable setAddress
location: class C24001_PersonalInformation
data.setAddress = ("149 East Bay Street");
java:42: cannot resolve symbol
symbol : variable setPhone
location: class C24001_PersonalInformation
data.setPhone = ("[phone]");
Here is the Demo followed by the class
public class C24001_PersonalInformationDriver
public static void main(String [] args)
          String name;
          int age;
          String address;
          String phone;
C24001_PersonalInformation data = new C24001_PersonalInformation();
          //Set information and calls from method, Me
data.setName("Joe Mahoney");
data.setAge(27);
data.setAddress("724 22nd Street");
data.setPhone("[phone]");
System.out.println("\nMy information: ");
System.out.println("Name: "+data.getName() );
System.out.println("Age: "+data.getAge() );
System.out.println("Address: "+data.getAddress() );
System.out.println("Phone: "+data.getPhone() );
          C24001_PersonalInformation data = new C24001_PersonalInformation();
          //Set information and calls from method, Friend 1
data.setName("Geri Rose");
data.setAge(24);
data.setAddress = ("149 East Bay Street");
data.setPhone = ("[phone]");
System.out.println("\nFriend #1 Information: ");
          System.out.println("Name: "+data.getName() );
          System.out.println("Age: "+data.getAge() );
          System.out.println("Address: "+data.getAddress() );
System.out.println("Phone: "+data.getPhone() );
          //C24001_PersonalInformation data2 = new C24001_PersonalInformation();
//Set information and calls from method, Friend 2
//data2.setName = ("John Carbonni");
//data2.setAge =(28);
//data2.setAddress = ("22 King Street");
//data2.setPhone = ("[phone]");
//System.out.println("\nFriend #2 Information: ");
//System.out.println("Name: "+data2.getName() );
          //System.out.println("Age: "+data2.getAge() );
          //System.out.println("Address: "+data2.getAddress() );
//System.out.println("Phone: "+data2.getPhone() );
public class C24001_PersonalInformation
private String name;
private int age;
private String address;
private String phone;
     // The constructor is a default               *
     public C24001_PersonalInformation()
          //System.out.println("Default Constructor Personal Info Class.");
// The setName method accepts an argument *
// which is stored in the name field. *
public void setName(String n)
name = n;
     // The setAge method accepts an argument *
     // which is stored in the age field. *
public void setAge(int a)
age = a;
     // The setAddress method accepts an argument *
     // which is stored in the adress field. *
public void setAddress(String d)
address = d;
     // The setPhone method accepts an argument *
     // which is stored in the phone field. *
     public void setPhone(String p)
     phone = p;
public void set(String n, int a, String d, String p)
     name = n;
     age= a;
     address = d;
     phone = p;
// The getName method returns the name field. *
public String getName()
return name;
     // The getAge method returns the age field. *
public int getAge()
return age;
     // The getAddress method returns the address field. *
public String getAddress()
return address;
// The getPhone method returns the phone field.*
public String getPhone()
return phone;
If anyone could help with this I would really appreciate it! Thank you!

Answer 1

The other two error are because of syntax errors on your part. You're defining methods, but not invoking them correctly. For example:
data.setPhone = ("[phone]");What you're doing, syntactically speaking, is setting a value to the "setPhone" field, which of course doesn't exist. What you meant to do is invoke the setPhone method. So change the above to this:
data.setPhone("[phone]");(remove that equals sign).
BTW, a couple of forum-consideration points:
When you post code, please wrap it in [code][/code] tags. It makes it easier to read, and people are more likely to help you.
This really isn't a question about compiling, even though it showed up during compilation. Probably a better forum would have been the New to Java forum.