获取键盘录入信息

public class ReadKeyDemo2 {/** * @param args * 获取用户键盘录入的数据，并将数据变成大写，当用户输入over后，结束流 * @throws IOException  */public static void main(String[] args) throws IOException {StringBuilder sb=new StringBuilder();InputStream in=System.in;int ch=-1;while((ch=in.read())!=-1){if(ch=='\r')continue;if(ch=='\n'){String temp=sb.toString();if("over".equals(temp))break;System.out.println(sb.toString().toUpperCase());sb.delete(0, sb.length());}elsesb.append((char)ch);}}}