Checking core structure...
compile_project:10: no matches found: *.in
rm -f calc-core.jar `find . -name \*.class`
(cd src; javac -encoding UTF-8 `find . -name \*.java`)
./calc/MULFunc.java:9: error: invalid method declaration; return type required
	public getValue(){
	       ^
./calc/Literal.java:13: error: invalid method declaration; return type required
      public getValue(){
             ^
./calc/SUBFunc.java:8: error: invalid method declaration; return type required
	public getValue(){
	       ^
./calc/Reference.java:15: error: reached end of file while parsing
      }
       ^
./calc/PRDFunc.java:12: error: invalid method declaration; return type required
	public getValue(){
	       ^
./calc/SheetManager.java:93: error: illegal start of expression
		public void save(){
		^
./calc/SheetManager.java:93: error: illegal start of expression
		public void save(){
		       ^
./calc/SheetManager.java:93: error: ';' expected
		public void save(){
		                ^
./calc/SheetManager.java:97: error: illegal start of expression
		public void save(File filename){
		^
./calc/SheetManager.java:97: error: illegal start of expression
		public void save(File filename){
		       ^
./calc/SheetManager.java:97: error: ';' expected
		public void save(File filename){
		                ^
./calc/SheetManager.java:97: error: ';' expected
		public void save(File filename){
		                              ^
./calc/DIVFunc.java:9: error: invalid method declaration; return type required
	public getValue(){
	       ^
./calc/Function.java:5: error: invalid method declaration; return type required
      public getValue(){
             ^
./calc/Cell.java:5: error: invalid method declaration; return type required
    public getContent(){
           ^
15 errors
make: *** [all] Error 1