JAVA获取系统进程

window环境下调用runtime对象，直接执行tasklist的DOS命令，获取系统各进程的状态。

//列出当前系统所有进程
public static void main(String[] args) {
BufferedReader br = null;
try {
Process proc = Runtime.getRuntime().exec("tasklist");
br = new BufferedReader(
new InputStreamReader(proc.getInputStream()));

System.out.println("Process info:");
String line;
while ((line = br.readLine()) != null) {
System.out.println(br.readLine());
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (br != null) {
try {
br.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}