java:object_serialization
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java:object_serialization [2017/02/17 14:03] gthanos |
java:object_serialization [2017/02/17 14:05] gthanos [Παράδειγμα Serialization] |
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| Line 48: | Line 48: | ||
| public String address; | public String address; | ||
| public int AMKA; | public int AMKA; | ||
| - | public transient double salary; | + | public double salary; |
| - | public transient Employee next; | + | public Employee next; |
| - | public transient ArrayList<Employee> list; | + | public ArrayList<Employee> list; |
| public String toString() { | public String toString() { | ||
| Line 152: | Line 152: | ||
| System.out.println(e); | System.out.println(e); | ||
| System.out.println(e1); | System.out.println(e1); | ||
| + | } | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | <WRAP todo 80% center round> | ||
| + | Στο παραπάνω παράδειγμα δηλώστε τα τελευταία τρία πεδία της κλάσης Employee ως transient, oπως παρακάτω. Μεταγλωττίστε και τρέξτε ξανά τις κλάσεις SerializeDemo και DeserializeDemo. Τι παρατηρείτε; | ||
| + | </WRAP> | ||
| + | |||
| + | <code java Employee.java> | ||
| + | import java.util.*; | ||
| + | |||
| + | public class Employee implements java.io.Serializable { | ||
| + | public String name; | ||
| + | public String address; | ||
| + | public int AMKA; | ||
| + | public transient double salary; | ||
| + | public transient Employee next; | ||
| + | public transient ArrayList<Employee> list; | ||
| + | |||
| + | public String toString() { | ||
| + | String str = "Name: " + name+"\n"; | ||
| + | str+="Address: " + address+"\n"; | ||
| + | str+="AMKA: " + AMKA+"\n"; | ||
| + | str+="Salary: " + salary+"\n"; | ||
| + | if(next != null) | ||
| + | str+="Next: " + next.name+"\n"; | ||
| + | | ||
| + | if( list != null) { | ||
| + | Iterator<Employee> it = list.iterator(); | ||
| + | if( it.hasNext() ) { | ||
| + | str+="List: "; | ||
| + | } | ||
| + | while( it.hasNext() ) { | ||
| + | str+= it.next().name+", "; | ||
| + | } | ||
| + | str+="\n"; | ||
| + | } | ||
| + | return str; | ||
| } | } | ||
| } | } | ||
java/object_serialization.txt · Last modified: 2017/02/17 14:11 by gthanos
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