java如何开启一个dos窗口?

最新推荐文章于 2022-03-03 12:57:03 发布

转载最新推荐文章于 2022-03-03 12:57:03 发布 · 3.7k 阅读

文章标签：

#java #dos #cache #byte #exception #null

本文提供两个Java示例代码，展示如何通过Java程序调用CMD命令行并进行交互。第一个示例直接使用OutputStream和InputStream读写数据；第二个示例则采用BufferedWriter和BufferedReader实现更高效的数据处理。

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Java代码

try {
Process process = Runtime.getRuntime().exec("cmd.exe");
OutputStream outputStream = process.getOutputStream();
final InputStream inputStream = process.getInputStream();
new Thread(new Runnable(){
byte[] cache = new byte[1024];
public void run() {
System.out.println("listener started");
try {
while(inputStream.read(cache)!=-1){
System.out.println(new String(cache));
}
} catch (IOException e) {
//e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
}
}).start();
outputStream.write(new byte[]{'d','i','r','/n'});
//inputStream.
int i = process.waitFor();
System.out.println("i=" + i);
} catch (Exception e) {
e.printStackTrace();
}

try {
            Process process = Runtime.getRuntime().exec("cmd.exe");
            OutputStream outputStream = process.getOutputStream();
            final InputStream inputStream = process.getInputStream();
            new Thread(new Runnable(){
                byte[] cache = new byte[1024];
                public void run() {
                     System.out.println("listener started");
                    try {
                        while(inputStream.read(cache)!=-1){
                            System.out.println(new String(cache));
                    }
                    } catch (IOException e) {
                        //e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                    }
                }
            }).start();
             outputStream.write(new byte[]{'d','i','r','/n'});
            //inputStream.
            int i = process.waitFor();
            System.out.println("i=" + i);
        } catch (Exception e) {
            e.printStackTrace();
        }

明白了没?

ggmmaallee (初级程序员) 2008-06-02

Java代码

try {
Process process = Runtime.getRuntime().exec("cmd.exe");
final BufferedWriter outputStream = new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
final BufferedReader inputStream = new BufferedReader(new InputStreamReader(process.getInputStream()));
new Thread(new Runnable() {
String line;
public void run() {
System.out.println("listener started");
try {
while ((line=inputStream.readLine()) != null) {
System.out.println(line);
}
} catch (IOException e) {
//e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
}
}).start();
new Thread(new Runnable() {
final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
public void run() {
System.out.println("writer started");
String line;
try {
while ((line = br.readLine()) != null) {
outputStream.write(line + "/r/n");
outputStream.flush();
}
} catch (IOException e) {
//e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
}
}).start();
int i = process.waitFor();
System.out.println("i=" + i);
} catch (Exception e) {
e.printStackTrace();
}
}