myinput.java

java程序设计导论（daniel liang著） 所有偶数课后习题答案

// MyInput.java: Contain the methods for reading primitive type
// values and string
import java.io.*;

public class MyInput {
  static BufferedReader br
    = new BufferedReader(new InputStreamReader(System.in), 1);

  /** Read a string from the keyboard */
  public static String readString() {
    // Declare and initialize the string
    String string = "";

    // Get the string from the keyboard
    try {
      string = br.readLine();
    }
    catch (IOException ex) {
      System.out.println(ex);
    }

    // Return the string obtained from the keyboard
    return string;
  }

  /** Read an int value from the keyboard */
  public static int readInt() {
    return Integer.parseInt(readString());
  }

  /** Read a double value from the keyboard */
  public static double readDouble() {
    return Double.parseDouble(readString());
  }

  /** Read a byte value from the keyboard */
  public static byte readByte() {
    return Byte.parseByte(readString());
  }

  /** Read a short value from the keyboard */
  public static short readShort() {
    return Short.parseShort(readString());
  }

  /** Read a long value from the keyboard */
  public static long readLong() {
    return Long.parseLong(readString());
  }

  /** Read a float value from the keyboard */
  public static float readFloat() {
    return Float.parseFloat(readString());
  }

  /** Read a character from the keyboard */
  public static char readChar() {
    return readString().charAt(0);
  }

  /** Read a boolean value from the keyboard */
  public static boolean readBoolean() {
    return new Boolean(readString()).booleanValue();
  }
}