error: cannot find file for class xyz

[Brian Sullivan <bsulliv at bbnow dot net>]

Hello,

I'm trying to compile something from bytecode (a .jar file) at the 
moment, using the latest gcj for mingw at the thisiscool site.  This is 
a jar output by our Cobol compiler for Java.

I'm getting warnings about unreachable bytecodes.  I understand warnings 
about unreachable real source, but unreachable bytecode is not something 
a gcj user should be concerned with.  But those are only warnings.

The errors I get involve the fact that a class is not present:
[DashoPro-V1.2-120198]:0: error: cannot find file for class 
com.legacyj.jfc.LMenu

and errors derived from the missing class, such as:
[DashoPro-V1.2-120198]:0: error: class 'com.legacyj.jfc.LMenu' has no 
method named 'getJPopupMenu' matching signature '()Ljavax/swing/JPopupMenu;'

I know the class is not present; it shouldn't be.  The runtime behavior 
is to throw an exception when attempting to access it, recover, and go 
on about our merry business; the .jar being compiled does execute 
properly using any Sun or IBM Java (yes, even jview) on Windows, Linux, 
etc.  Is there a way to tell it that I want any unknown classes to be 
attempted as interpretation, failing that to throw exceptions at runtime?

For the curious, the full log is given below.

C:\gcj\datetime>gcj --main=datetime datetime.jar
[DashoPro-V1.2-120198]: In class `com.legacyj.jfc.LComponent':
[DashoPro-V1.2-120198]: In method 
`com.legacyj.jfc.LComponent.getLayoutManager()':
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 17 to before 20
[DashoPro-V1.2-120198]: In method 
`com.legacyj.jfc.LComponent.getInt(java.lang.Object)':
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 120 to 
before 123
[DashoPro-V1.2-120198]: In method 
`com.legacyj.jfc.LComponent.getInts(java.lang.Object)':
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 198 to 
before 201
[DashoPro-V1.2-120198]: In method 
`com.legacyj.jfc.LComponent.getDouble(java.lang.Object)':
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 123 to 
before 126
[DashoPro-V1.2-120198]: In method 
`com.legacyj.jfc.LComponent.adjustColor(int,int)':
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 212 to 
before 215
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 231 to 
before 234
[DashoPro-V1.2-120198]: In method 
`com.legacyj.jfc.LComponent.handlePopup(java.awt.event.MouseEvent)':
[DashoPro-V1.2-120198]:0: error: cannot find file for class 
com.legacyj.jfc.LMenu
[DashoPro-V1.2-120198]:0: error: cannot find file for class 
com.legacyj.jfc.LMenu
[DashoPro-V1.2-120198]:0: error: cannot find file for class 
com.legacyj.jfc.LMenu
[DashoPro-V1.2-120198]:0: error: class 'com.legacyj.jfc.LMenu' has no 
method named 'getJPopupMenu' matching signature '()Ljavax/swing/JPopupMenu;'
[DashoPro-V1.2-120198]: In method 
`com.legacyj.jfc.LComponent.processKey(com.legacyj.jfc.LComponent,java.awt.event.KeyEvent)':
[DashoPro-V1.2-120198]:0: error: class 'javax.swing.JRootPane' has no 
method named 'getDefaultButton' matching signature '()Ljavax/swing/JButton;'
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 61 to before 64
[DashoPro-V1.2-120198]:0: warning: unreachable bytecode from 88 to before 91
[DashoPro-V1.2-120198]: In class `com.legacyj.jfc.LWindow':
[DashoPro-V1.2-120198]: In constructor `(int,int,boolean)':
[DashoPro-V1.2-120198]:0: error: cannot find file for class 
com.legacyj.jfc.LMasterWindow
[DashoPro-V1.2-120198]:0: error: cannot find file for class 
com.legacyj.jfc.LMasterWindow
[DashoPro-V1.2-120198]:0: confused by earlier errors, bailing out