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Java键盘输入类

关键词： Java    输入    键盘                                          

package org.Xinsoft.cisi;

import java.io.*;

public class Input {
    
     private InputStreamReader in=new InputStreamReader(System.in);
     private BufferedReader reader=new BufferedReader(in);
    
     public String readString() {
            String s="";
            try {
                  s=reader.readLine();
            } catch(IOException e) {
                  System.out.println(e);
                  System.exit(0);
            }
            return s;
      }
     
     public char readChar() {
            char ch=' ';
            try {
                  String s=readString();
                  ch=s.charAt(0);
            } catch(Exception e) {
                  System.out.println("Error input type. The program will exit.");
                  System.exit(0);
            }
            return ch;
      }
     
     public int readInt() {
            String s=readString();
            int i=0;
            try {
                  i=Integer.parseInt(s);
            } catch(Exception e) {
                  System.out.println("Error input type. The program will exit.");
                  System.exit(0);
            }
            return i;
      }
     
     public double readDouble() {
            String s=readString();
            double d=0.0;
            try {
                  d=Double.parseDouble(s);
            } catch(Exception e) {
                  System.out.println("Error input type. The program will exit.");
                  System.exit(0);
            }
            return d;
      }
     
     public float readFloat() {
            String s=readString();
            float f=0.0f;
            try {
                  f=Float.parseFloat(s);
            } catch(Exception e) {
                  System.out.println("Error input type. The program will exit.");
                  System.exit(0);
            }
            return f;
      }
}
 

【作者: 小咪的爸爸】【访问统计:】【2005年12月4日 星期日 22:56】【注册】【打印】