我想要一个主类,用户可以在其中定义他们想要启动的客户类进程的数量。我该如何解决这个问题?下面是我用来运行一次 Customer 类的代码。
try {
ProcessBuilder customer = new ProcessBuilder("java.exe","-cp","bin","lab_3.Customer");
Process runCustomer = customer.start();
runCustomer.waitFor();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
最佳答案
方法 1,克隆
我不知道这有多好,但是,你可以尝试做这样的事情:
ProcessBuilder customer = new ProcessBuilder("java.exe","-cp","bin","lab_3.Customer");
Process runCustomer = customer.clone().start();
.clone() 将复制它,然后从它开始进程。现在您可以执行以下操作:
ProcessBuilder customer = new ProcessBuilder("java.exe","-cp","bin","lab_3.Customer");
Process runCustomer1 = customer.clone().start();
Process runCustomer2 = customer.clone().start();
Process runCustomer3 = customer.clone().start();
Process runCustomer4 = customer.clone().start();
方法 2,参数数组
您还可以将参数存储在数组中,每次您想要启动新的 Process
时,您只需创建一个 ProcessBuilder
的新实例,如下所示:
String command = "java.exe";
String[] args = new String[]{ "-cp", "bin", "lab_3.Customer" };
for(int i = 0; i < numOfProcesses; i++) {
new ProcessBuilder(command, args).start();
}
像这样,如果您需要存储创建的进程
:
String command = "java.exe";
String[] args = new String[]{ "-cp", "bin", "lab_3.Customer" };
Process[] processes = new Process[numOfProcesses];
for(int i = 0; i < numOfProcesses; i++) {
processes[i] = new ProcessBuilder(command, args).start();
}
关于java - 使用 ProcessBuilder 运行同一类的多个进程,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53805094/