Thread: Help please i keep getting a runtime error with code that seems correct.

I am trying to read an object from a file. I have followed the examples in my book and online that i could find. but i keep getting an error saying

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to [Ljava.lang.String;
at Manager.savemeth(Manager.java:67)
at Manager$1.actionPerformed(Manager.java:27)
at javax.swing.AbstractButton.fireActionPerformed(Unk nown Source)
at javax.swing.AbstractButton$Handler.actionPerformed (Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed (Unknown Source)

it keeps going but this is the main part. 67 is the String[] temp that i posted below and 27 is the call to the method with the string in it

 
				instream = new ObjectInputStream(new FileInputStream(filename));
				String[] temp = (String[])(instream.readObject());

i can't figure out why im running into this problem.

Is the readObject() method returning a String object instead of a String array?
Read into an Object and print out its class (call getClass)

Originally Posted by jorys22

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to [Ljava.lang.String;

i can't figure out why im running into this problem.

The exception message is (at least for me) clear: it states that a String cannot be cast to String[] (the part "[L" is the bytecode-level indication of an array of objects).
Why are you expecting a String[] ? What have you serialized (elsewhere in the code) into the file? If you have serialized N single String objects, you can't expect to read them as a String[].