Question

我正在通过进程运行exec命令。我希望我的程序只在进程完成后才会继续运行。这是我的代码：

Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("tools/jadx/bin/jadx.bat -d JavaProjects/");

//the rest of the code
System.out.println("Process is finished");

我需要在完成进程后才执行其余的代码，因为它取决于进程输出。有什么想法吗？

Answer 1

我已经得到了答案，现在可行了!!!

每个进程都有输入和输出流。我的具体过程必须清空他的输入缓冲区才能继续运行。我添加的是以下代码：

Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("tools/jadx/bin/jadx.bat -d JavaProjects/");
out = new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
in = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
    System.out.println(line);
}
int lExitCode = process.waitFor();
if (lExitCode == 0)
    System.out.println("\n\n$$$$$   Process was finished successfully   $$$$$\n\n");
else
    System.out.println("\n\n$$$$$   Process was finished not successfully   $$$$$\n\n");

Answer 2

waitFor就是为了这个目的：

Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("tools/jadx/bin/jadx.bat -d JavaProjects/");
int lExitCode = process.waitFor();
//the rest of the code
if (lExitCode == 0)
  System.out.println("Process was finished successfull.");
else
  System.out.println("Process was finished not successfull.");

只有在通过java

2 个答案: