EasyIn.java

//package javaclasses;

import java.io.*;

public abstract class EasyIn {
	public static String getString() {
		boolean ok = false;
		String s = null;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				s = s.trim();
				ok = true;
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return s;
	}

	public static int getInt() {
		int i = 0;
		boolean ok = false;
		String s;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				i = Integer.parseInt(s.trim());
				ok = true;
			} catch (NumberFormatException e) {
				System.out.println("Make sure you enter an integer");
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return i;
	}

	public static byte getByte() {
		byte i = 0;
		boolean ok = false;
		String s;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				i = Byte.parseByte(s.trim());
				ok = true;
			} catch (NumberFormatException e) {
				System.out.println("Make sure you enter a byte");
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return i;
	}

	public static short getShort() {
		short i = 0;
		boolean ok = false;
		String s;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				i = Short.parseShort(s.trim());
				ok = true;
			} catch (NumberFormatException e) {
				System.out.println("Make sure you enter a short integer");
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return i;
	}

	public static long getLong() {
		long l = 0;
		boolean ok = false;
		String s;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				l = Long.parseLong(s.trim());
				ok = true;
			} catch (NumberFormatException e) {
				System.out.println("Make sure you enter a long integer");
			}

			catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return l;
	}

	public static double getDouble() {
		double d = 0;
		boolean ok = false;
		String s;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				d = Double.parseDouble(s.trim());
				ok = true;
			} catch (NumberFormatException e) {
				System.out.println("Make sure you enter a decimal number");
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return d;
	}

	public static float getFloat() {
		float f = 0;
		boolean ok = false;
		String s;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				f = Float.parseFloat(s.trim());
				ok = true;
			} catch (NumberFormatException e) {
				System.out.println("Make sure you enter a decimal number");
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return f;
	}

	public static char getChar() {
		char c = ' ';
		boolean ok = false;
		String s;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				s = new String(b);
				if (s.trim().length() != 1) {
					System.out.println("Make sure you enter a single character");
				} else {
					c = s.trim().charAt(0);
					ok = true;
				}
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
		return c;
	}

	public static void pause() {
		boolean ok = false;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.in.read(b);
				ok = true;
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
	}

	public static void pause(String messageIn) {
		boolean ok = false;
		while (!ok) {
			byte[] b = new byte[512];
			try {
				System.out.print(messageIn);
				System.in.read(b);
				ok = true;
			} catch (IOException e) {
				System.out.println(e.getMessage());
			}
		}
	}
}