MethodVisitor mv;
cv.visit(V1_1, ACC_PUBLIC, "C", null, "java/lang/Object", null);
cv.visitSource("C.java", null);
fv = cv.visitField(ACC_PUBLIC, "f", "I", null, null);
if (fv != null) {
fv.visitEnd();
}
mv = cv.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
if (mv != null) {
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);