在Java中向子进程发送信号

import java.io.IOException;

public class SignalExample {
    public static void main(String[] args) {
        try {
            ProcessBuilder processBuilder = new ProcessBuilder("your_command", "your_argument");
            Process process = processBuilder.start();
            
            // 发送默认的终止信号
            process.destroy();
            
            // 发送其他信号（例如：SIGINT）
            int pid = getProcessId(process);
            Runtime.getRuntime().exec("kill -2 " + pid);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    private static int getProcessId(Process process) {
        try {
            if (process.getClass().getName().equals("java.lang.UNIXProcess")) {
                java.lang.reflect.Field field = process.getClass().getDeclaredField("pid");
                field.setAccessible(true);
                return field.getInt(process);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return -1;
    }
}