JAVA-录入操作例子

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class SystemInputDemo
{
public static void main(String[] args) throwsException
{
readInByArray();
readInByBuffer();
}

//掌握S他ringBuffer这种方法，进行IO操作使用.
public static void readInByBuffer() throwsException
{
  StringBuffer sb = newStringBuffer();
  while (true)
  {
   int ch =System.in.read();
   if (ch =='\r')
    continue;
   else if (ch== '\n')
   {
    Strings = sb.toString();
    if(s.equalsIgnoreCase("over"))
    {
     break;
    }
    System.out.println(s.toUpperCase());
    sb.delete(0,sb.length());
   }
   else
    sb.append((char)ch);
  }
}

public static void readInByArray() throwsException
{
  byte [] b = newbyte[1024];
  int pos = 0;
  while(true)
  {
   int by =System.in.read();
   switch(by)
   {
    case'\r' :
     break;
    case'\n' :
     Strings = new String(b, 0, pos);
     if(s.equalsIgnoreCase("over"))
      return;
     System.out.println(s.toUpperCase());
     pos= 0;
     break;
    default:
     b[pos++]= (byte)by;
   }

}
}
}