ObjectStreamClass serves as a serialization descriptor for a class, holding the class's name and serialVersionUID.
Fields
| Modifier and Type | Field | Description |
|---|---|---|
| static ObjectStreamField[] | NO_FIELDS | serialPersistentFields value indicating no serializable fields |
Methods
| Modifier and Type | Method | Description |
|---|---|---|
| Class<?> | forClass() | It returns the class in the local VM that this version is mapped to. |
| ObjectStreamField | getField(String name) | It gets the field of this class by name. |
| ObjectStreamField[] | getFields() | It returns anarrayof the fields of this serialization class. |
| String | getName() | It returns the name of the class described by this descriptor. |
long |
getSerialVersionUID() | It returns the serialVersionUID for this class. |
| Static ObjectStreamClass | lookup(Class<?> cl) | It finds the descriptor for a class that can be serialized. |
| Static ObjectStreamClass | lookupAny(Class<?> cl) | It returns the descriptor for any class, regardless of whether it implements Serializable. |
| String | toString() | It returns a string describing this ObjectStreamClass. |
Example
Example
import java.io.ObjectStreamClass;
import java.util.Calendar;
public class ObjectStreamClassExample {
public static void main(String[] args) {
// create a new object stream class for Integers
ObjectStreamClass osc = ObjectStreamClass.lookup(SmartPhone.class);
// get the value field from ObjectStreamClass for integers
System.out.println("" + osc.getField("price"));
// create a new object stream class for Calendar
ObjectStreamClass osc2 = ObjectStreamClass.lookup(String.class);
// get the Class instance for osc2
System.out.println("" + osc2.getField("hash"));
}
}
Output:
Output
I price
null
