My codes run in windows but not in Linux what is wrong?

Question

//I have 4 codes in total but heres is one for example
import java.util.*;
// This state accepts numeric input less than 100 and subtracts
// 1 from each input number before exiting the state.
// We exit the state if the input is exactly 100.
public class AState extends State {
public AState (String n, boolean d ) {
super(n,d);
public void RUN () {
int ch = 0;
entry();
Scanner stdin = new Scanner(System.in);
ch = stdin.nextInt();
while ( ch != 100 ) {
ch--;
System.out.print(" " + ch);
ch = stdin.nextInt();
// change state from AState to BState
Controller.state = Controller.states[Controller.BSTATE];
// this will be the AState version of exit().
exit();
//It runs perfectly in windows but once I compile in a terminal of Linux it doesn't run it show like 8 errors, why is that, can somebody tell me what can I do about it

Answer 1

public class AState extends State {
^
Astate.java:18: cannot find symbol
symbol : method entry()
location: class AState
entry();
^
./Controller.java:8: class BState is public, should be declared in a file named BState.java
public class BState extends State {
^
./Controller.java:8: cannot find symbol
symbol: class State
public class BState extends State {
^
Astate.java:31: cannot access Controller
bad class file: ./Controller.java
file does not contain class Controller
Please remove or make sure it appears in the correct subdirectory of the classpath.
Controller.state = Controller.states[Controller.BSTATE];
^
6 errors
//As i said before, this run perfently through windows the same exactly code.