+ ant.echo(message: "Note: To automate the retro transformation, you can specify the JDK 1.4 base directory on the command line:\nex: groovy build.groovy -a retro -j \"" + jreDir + "\"");
+ }
+ if (!jreDir) {
+ ant.echo(message: "A JRE 1.4 base directory is required.")
+ return
+ }
+ if (!jreDir.exists()) {
+ ant.echo(message: "The specified JRE 1.4 base directory does not exist!")
+ return
+ }
+ if (!jreDir.isDirectory()) {
+ ant.echo(message: "The specified JRE 1.4 base directory is not a directory!")