"There is a compiler error" and i feel i got a working way -Unit Testing in Java - Testing the Running Total

I am doing the final challenge and after working a bit and scanning through the coding i thought i have found a possible working way, here is my code:

@Test
public void vendingOperationSuccessfulWithIncrementedSalesTotal() throws Exception {
    machine.addMoney(75);

    Item item = machine.vend("A1");

    assertEquals("Twinkies", item.getName());

  assertEquals(75, machine.getRunningSalesTotal());
}

And this is the Preview:

./com/teamtreehouse/vending/VendingMachineTest.java:10: error: expected private getRunningSalesTotal{ ^ ./com/teamtreehouse/vending/VendingMachineTest.java:11: error: illegal start of type return runningSalesTotal; ^ ./com/teamtreehouse/vending/VendingMachineTest.java:23: error: class, interface, or enum expected public void setUp() throws Exception { ^ ./com/teamtreehouse/vending/VendingMachineTest.java:25: error: class, interface, or enum expected machine = new VendingMachine(notifier, 10, 10, 10); ^ ./com/teamtreehouse/vending/VendingMachineTest.java:26: error: class, interface, or enum expected machine.restock("A1", "Twinkies", 10, 30, 75); ^ ./com/teamtreehouse/vending/VendingMachineTest.java:27: error: class, interface, or enum expected } ^ ./com/teamtreehouse/vending/VendingMachineTest.java:30: error: class, interface, or enum expected public void vendingOperationSuccessfulWithIncrementedSalesTotal() throws Exception { ^ ./com/teamtreehouse/vending/VendingMachineTest.java:33: error: class, interface, or enum expected Item item = machine.vend("A1"); ^ ./com/teamtreehouse/vending/VendingMachineTest.java:35: error: class, interface, or enum expected assertEquals("Twinkies", item.getName()); ^ ./com/teamtreehouse/vending/VendingMachineTest.java:37: error: class, interface, or enum expected assertEquals(75, machine.getRunningSalesTotal()); ^ ./com/teamtreehouse/vending/VendingMachineTest.java:38: error: class, interface, or enum expected } ^ ./com/teamtreehouse/vending/VendingMachineTest.java:14: error: class NotifierSub is public, should be declared in a file named NotifierSub.java public class NotifierSub implements Notifier { ^ ./com/teamtreehouse/vending/VendingMachineTest.java:10: error: cannot find symbol private getRunningSalesTotal{ ^ symbol: class getRunningSalesTotal location: class VendingMachineTest 13 errors

Any idea what i am doing wrong?