关于控制台清屏的问题 相当与c++中system("cls");的效果在cmd中比如我要显示一行数据后,擦除掉这行, 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 以下的代码可以执行dos命令:import java.util.*;import java.io.*;class StreamGobbler extends Thread{ InputStream is; String type; StreamGobbler(InputStream is, String type) { this.is = is; this.type = type; } public void run() { try { InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); String line=null; while ( (line = br.readLine()) != null) System.out.println(type + ">" + line); } catch (IOException ioe) { ioe.printStackTrace(); } }}public class GoodWindowsExec{ public static void main(String args[]) { if (args.length < 1) { System.out.println("USAGE: java GoodWindowsExec <cmd>"); System.exit(1); } try { String osName = System.getProperty("os.name" ); String[] cmd = new String[3];System.out.println( osName); if( osName.equals( "Windows 2000" ) ) { cmd[0] = "cmd.exe" ; cmd[1] = "/C" ; cmd[2] = args[0]; } else if( osName.equals( "Windows 95" ) ) { cmd[0] = "command.com" ; cmd[1] = "/C" ; cmd[2] = args[0]; } Runtime rt = Runtime.getRuntime(); System.out.println("Execing " + cmd[0] + " " + cmd[1] + " " + cmd[2]); Process proc = rt.exec(cmd); // any error message? StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream(), "ERROR"); // any output? StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream(), "OUTPUT"); // kick them off errorGobbler.start(); outputGobbler.start(); // any error??? int exitVal = proc.waitFor(); System.out.println("ExitValue: " + exitVal); } catch (Throwable t) { t.printStackTrace(); } }} 然后用以下语句执行即可:javac GoodWindowsExec.javajava GoodWindowsExec dirpause如果楼主不想在运行时才指定要运行的dos命令,可以在上面的文件中指定cmd[2]变量即可 很简单啊System.out.println("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\");多打一点退格键不就可以了吗 哦,应该用System.out.print("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\"); congliu(取次花丛都不顾,半缘修道半缘君。在c++下就一个system("cls");在java中就这么难实现吗?那如果想运行dos底下的命令是不是都很难啊passacaglia(神秘园) 你的很有创意~~~要是我要显示很多行后~~比如是个菜单选项~~~~我按个键退回到上级菜单,不是要清屏吗?那要多少个/b啊 楼主不会是在做一个用dos界面的系统吧 to :: congliu(取次花丛都不顾,半缘修道半缘君。) 呵呵,谢谢你了,又学到一点!不错! Java笔试题—File类 请教大家一个问题 字符串异或显示不出值是什么原因 JLabel的名称中如何换行? 救命啊。。。 我做一个表格的错误,麻烦给为帮我解决啊~~ 绘ArrayList()中的直线 如何在linux环境下配置java环境变量? 学习Java的好方法,回帖奖励,奖励前20名回帖者 tomcat 启动时出现端口被使用情况,但是项目可以跑起来,错误大概就是这样的,有些没贴如下 新人初学JAVA,现请各位高手指点 求Java 2 图形设计卷Ⅱ:SWING 下载
import java.io.*;class StreamGobbler extends Thread
{
InputStream is;
String type;
StreamGobbler(InputStream is, String type)
{
this.is = is;
this.type = type;
}
public void run()
{
try
{
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line=null;
while ( (line = br.readLine()) != null)
System.out.println(type + ">" + line);
} catch (IOException ioe)
{
ioe.printStackTrace();
}
}
}public class GoodWindowsExec
{
public static void main(String args[])
{
if (args.length < 1)
{
System.out.println("USAGE: java GoodWindowsExec <cmd>");
System.exit(1);
}
try
{
String osName = System.getProperty("os.name" );
String[] cmd = new String[3];
System.out.println( osName);
if( osName.equals( "Windows 2000" ) )
{
cmd[0] = "cmd.exe" ;
cmd[1] = "/C" ;
cmd[2] = args[0];
}
else if( osName.equals( "Windows 95" ) )
{
cmd[0] = "command.com" ;
cmd[1] = "/C" ;
cmd[2] = args[0];
}
Runtime rt = Runtime.getRuntime();
System.out.println("Execing " + cmd[0] + " " + cmd[1]
+ " " + cmd[2]);
Process proc = rt.exec(cmd);
// any error message?
StreamGobbler errorGobbler = new
StreamGobbler(proc.getErrorStream(), "ERROR");
// any output?
StreamGobbler outputGobbler = new
StreamGobbler(proc.getInputStream(), "OUTPUT");
// kick them off
errorGobbler.start();
outputGobbler.start();
// any error???
int exitVal = proc.waitFor();
System.out.println("ExitValue: " + exitVal);
} catch (Throwable t)
{
t.printStackTrace();
}
}
}
java GoodWindowsExec dir
pause如果楼主不想在运行时才指定要运行的dos命令,可以在上面的文件中指定cmd[2]变量即可
System.out.println("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\");
多打一点退格键不就可以了吗
在c++下就一个system("cls");在java中就这么难实现吗?
那如果想运行dos底下的命令是不是都很难啊passacaglia(神秘园)
你的很有创意~~~要是我要显示很多行后~~比如是个菜单选项~~~~我按个键退回到上级菜单,不是要清屏吗?那要多少个/b啊