macOS Java fails in Xcode 3

[Alazzawi]

I want to use Xcode to write simple GUI-based Java application (say a window with a button which when clicked changes a label or something).

I open Xcode and choose new project and then Java, Java Application. Xcode creates some files, when I click Build and Go I get one error:

/Users/usename/Desktop/Q
/usr/bin/ant -emacs
/usr/bin/ant: line 83: uname: command not found
/usr/bin/ant: line 95: basename: command not found
/usr/bin/ant: line 99: ls: command not found
/usr/bin/ant: line 100: expr: command not found
/usr/bin/ant: line 101: expr: command not found
/usr/bin/ant: line 104: dirname: command not found
/usr/bin/ant: line 108: dirname: command not found
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Build failed (1 error)

Any ideas?

Thank you.

PS: Mac OS X 10.5.4, Xcode 3.1 (Beta)