Error Messages when compiling program

public static void main(String[])

import java.io.*;
class TigerBank {
	private int coin1;
	private int coin2;
	private int coin3;
	private int coin4;
	private int total;

	public TigerBank() // Default consructor, no defaults
	{
		return;
	}
	public TigerBank(int o, int tw, int th, int f) // with defaults
	{
		coin1 = o;
		coin2 = tw;
		coin3 = th;
		coin4 = f;
		return;
	}
	public int getCoin1() {
		return coin1;
	}
	public int getCoin2() {
		return coin2;
	}
	public int getCoin3() {
		return coin3;
	}
	public int getCoin4() {
		return coin4;
	}
	public int getTotal() {
		total = coin1 + (coin2 * 5) + (coin3 * 25) + (coin4 * 50);
		return total;
	}
	public void setCoin1(int newCoin1) {
		coin1 += newCoin1;
		return;
	}
	public void setCoin2(int newCoin2) {
		coin2 += newCoin2;
		return;
	}
	public void setCoin3(int newCoin3) {
		coin3 += newCoin3;
		return;
	}
	public void setCoin4(int newCoin4) {
		coin4 += newCoin4;
		return;
	}
	public void inputdata() throws IOException // reads Coin details
	{
		BufferedReader console =
			new BufferedReader(new InputStreamReader(System.in));
		System.out.println("Welcome to Sharma's Tiger Bank Program!");
		System.out.println("<><><><><><><><><><><><><><><><><><><><><><><>");
		System.out.println();
		System.out.println("Enter the current contents of Sharma's Bank:");
		System.out.println();
		System.out.print("Enter the number of Coin1: ");
		String input = console.readLine();
		coin1 = Integer.parseInt(input);
		System.out.print("Enter the number of Coin2: ");
		input = console.readLine();
		coin2 = Integer.parseInt(input);
		System.out.print("Enter the number of Coin3: ");
		input = console.readLine();
		coin3 = Integer.parseInt(input);
		System.out.print("Enter the number of Coin4: ");
		input = console.readLine();
		coin4 = Integer.parseInt(input);
		return;
	}
	public void outputdata() // displays details in neat line
	{
		System.out.println("Coin1:              " + coin1);
		System.out.println("Coin2:     " + "\t" + coin2);
		System.out.println("Coin3:    	" + coin3);
		System.out.println("Coin4:               " + coin4);
		System.out.println("Total:              " + getTotal());
		return;
	}
}
class TigerBankDriver {
	public static void main(String[] args) throws IOException {
		//int menu() throws IOException;
		int tempi;
		boolean finished = false;
		BufferedReader console =
			new BufferedReader(new InputStreamReader(System.in));
		TigerBank Sharma = new TigerBank();
		System.out.println();
		Sharma.inputdata();
		System.out.print("Enter the total (in terms of coin1): ");
		String input = console.readLine();
		tempi = Integer.parseInt(input);
		if (tempi != Sharma.getTotal()) {
			System.out.println();
			System.out.println(
				"Error! Total amount entered does not match coins in bank!");
			System.exit(0);
		}
		System.out.println();
		System.out.println("The Tiger Bank currently contains: ");
		System.out.println();
		Sharma.outputdata();
		do {
			// Display Tiger Bank Menu
			int choice = menu();
			// Switch Options
			switch (choice) {
				case 1 :
					System.out.print("Enter the number of coin1: ");
					input = console.readLine();
					tempi = Integer.parseInt(input);
					Sharma.setCoin1(tempi);
					break;
				case 2 :
					System.out.print("Enter the number of coin2: ");
					input = console.readLine();
					tempi = Integer.parseInt(input);
					Sharma.setCoin2(tempi);
					break;
				case 3 :
					System.out.print("Enter the number of coin3: ");
					input = console.readLine();
					tempi = Integer.parseInt(input);
					Sharma.setCoin3(tempi);
					break;
				case 4 :
					System.out.print("Enter the number of coin4: ");
					input = console.readLine();
					tempi = Integer.parseInt(input);
					Sharma.setCoin4(tempi);
					break;
				case 5 :
					if (Sharma.getCoin1() != 1) {
						System.out.println(
							"There are " + Sharma.getCoin1() + " coin1s in the Bank.");
					}
					else {
						System.out.println(
							"There is " + Sharma.getCoin1() + " coin1 in the Bank.");
					}
					break;
				case 6 :
					if (Sharma.getCoin2() != 1) {
						System.out.println(
							"There are " + Sharma.getCoin2() + " coin2s in the Bank.");
					}
					else {
						System.out.println(
							"There is " + Sharma.getCoin2() + " coin2 in the Bank.");
					}
					break;
				case 7 :
					if (Sharma.getCoin3() != 1) {
						System.out.println(
							"There are " + Sharma.getCoin3() + " coin3s in the Bank.");
					}
					else {
						System.out.println(
							"There is " + Sharma.getCoin3() + " coin3 in the Bank.");
					}
					break;
				case 8 :
					if (Sharma.getCoin4() != 1) {
						System.out.println(
							"There are " + Sharma.getCoin4() + " coin4s in the Bank.");
					}
					else {
						System.out.println(
							"There is " + Sharma.getCoin4() + " coin4 in the Bank.");
					}
					break;
				case 9 :
					if (Sharma.getTotal() != 1) {
						System.out.println(
							"The Bank currently contains the equivalent of "
								+ Sharma.getTotal()
								+ " coin1s.");
					}
					else {
						System.out.println(
							"The Bank currently contains the equivalent of "
								+ Sharma.getTotal()
								+ " coin1.");
					}
					break;
				case 0 :
					finished = true;
					break;
				default :
					System.out.println("Error! Invalid Choice!");
					break;
			}
			if (finished == false) {
				System.out.println("The Tiger Bank currently contains: ");
				Sharma.outputdata();
				System.out.println();
				System.out.println();
			}
		}
		while (finished == false);
		System.out.println();
		System.out.println("The final contents of the Bank are:");
		Sharma.outputdata();
		System.out.println();
		System.out.println("So Make a note!");
		//return 0;
	}
	static int menu() throws IOException // Menu Function
	{
		BufferedReader console =
			new BufferedReader(new InputStreamReader(System.in));
		int ch;
		System.out.println();
		System.out.println();
		System.out.println(" Tiger bank Menu ");
		System.out.println("~~~~~~~~~~~~~~~~~~");
		System.out.println();
		System.out.println("1. Add Coin1s");
		System.out.println("2. Add Coin2s");
		System.out.println("3. Add Coin3s");
		System.out.println("4. Add Coin4s");
		System.out.println("5. Display Coin1s");
		System.out.println("6. Display Coin2s");
		System.out.println("7. Display Coin3s");
		System.out.println("8. Display Coin4s");
		System.out.println("9. Display Total");
		System.out.println("0. Quit");
		System.out.println();
		System.out.print("Enter Choice: ");
		ch = console.read();
		return ch;
	}
}

input = console.readLine();
tempi = Integer.parseInt(input);
Sharma.setCoin1 (tempi);