public Class loadNewClass(String javaFile, String packageName) {
Class myClass = null;
String className = javaFile.replace(".java", ".class");
File inpFile = new File(className);
int idx = className.lastIndexOf(File.separatorChar);
String javaName = className.substring(idx + 1, className.indexOf("."));
int size = (int) inpFile.length();
byte[] ba = new byte[size];
try {
FileInputStream fis = new FileInputStream(className);
// read the entry
int bytes_read = 0;
while (bytes_read != size) {
int r = fis.read(ba, bytes_read, size - bytes_read);
if (r < 0) break;
bytes_read += r;
}
if (bytes_read != size) throw new IOException("cannot read entry");
} catch (FileNotFoundException fnfExc) {
System.out.println("File : " + className + " not found");
fnfExc.printStackTrace();
} catch (IOException ioExc) {
System.out.println("IO Exception in JavaCompile trying to read class: ");
ioExc.printStackTrace();
}
try {
String packageAppendedFileName = "";
if (packageName.isEmpty()) packageAppendedFileName = javaName;
else packageAppendedFileName = packageName + "." + javaName;
packageAppendedFileName.replace(File.separatorChar, '.');
myClass = defineClass(packageAppendedFileName, ba, 0, size);
// SOS-StergAutoCompletionScalaSci.upDateAutoCompletion(myClass);
String userClassName = myClass.getName();
JOptionPane.showMessageDialog(null, "Class " + userClassName + " loaded successfully !");
} catch (ClassFormatError exc) {
System.out.println("error defining class " + inpFile);
exc.printStackTrace();
} catch (Exception ex) {
System.out.println("some error defining class " + inpFile);
ex.printStackTrace();
}
return myClass;
}
protected byte[] getClassData(String directory, String name) {
String classFile = directory + "/" + name.replace('.', '/') + ".class";
int classSize = (int) new File(classFile).length();
byte[] buf = new byte[classSize];
try {
FileInputStream filein = new FileInputStream(classFile);
classSize = filein.read(buf);
filein.close();
} catch (FileNotFoundException e) {
return null;
} catch (IOException e) {
return null;
}
return buf;
}