是一个文件内容读入数组的问题？

[scholes3232]

文件中的内容形式为：
aaaaa
bbbbb
cccc
dddd
我希望能把所有的内容都放到一个数组中去！

程序：
ArrayList array1= new ArrayList();
try
{
BufferedReader br=new BufferedReader(new FileReader((String) dlgFileDialog3.getDirectory()+dlgFileDialog3.getFile()));
String s="";
while((s=br.readLine())!=null)
{
array2.add(s);

}
}
catch(IOException es)
{
System.out.println(es.toString());
}
String[] stringArray2=(String[])array2.toArray();

但有出错提示：
java.lang.ClassCastException: [Ljava.lang.Object;
at App.AppMain$Listener.diff(AppMain.java:236)
at App.AppMain$Listener.actionPerformed(AppMain.java:122)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1767)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1820)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:419)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:258)
at java.awt.Component.processMouseEvent(Component.java:5022)
at java.awt.Component.processEvent(Component.java:4819)
at java.awt.Container.processEvent(Container.java:1525)
at java.awt.Component.dispatchEventImpl(Component.java:3527)
at java.awt.Container.dispatchEventImpl(Container.java:1582)
at java.awt.Component.dispatchEvent(Component.java:3368)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3359)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3074)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3004)
at java.awt.Container.dispatchEventImpl(Container.java:1568)
at java.awt.Window.dispatchEventImpl(Window.java:1586)
at java.awt.Component.dispatchEvent(Component.java:3368)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:445)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:191)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:144)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:130)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)

[windrainer]

java.lang.ClassCastException为强制类型转换的异常，
Object x = new Integer(0);
System.out.println((String)x);此句便会抛此异常，建议检查一下用到的强制类型转换语句