goja-core/src/main/java/goja/core/kits/lang/JVMKit.java
public static int getPid() {
        String name = ManagementFactory.getRuntimeMXBean().getName();
        int indexOf = name.indexOf(StringPool.AT);
        if (indexOf > 0) {
            return Integer.parseInt(name.substring(0, indexOf));
        } else {
            return -1;
        }
    }
public static int getPid() {
        String name = ManagementFactory.getRuntimeMXBean().getName();
        int indexOf = name.indexOf(StringPool.AT);
        if (indexOf > 0) {
            return Integer.parseInt(name.substring(0, indexOf));
        } else {
            return -1;
        }
    }
public static int getPid ( ) { String name = ManagementFactory . getRuntimeMXBean ( ) . getName ( ) ; int indexOf = name . indexOf ( StringPool . AT ) ; if ( indexOf > 0 ) { return Integer . parseInt ( name . substring ( 0 , indexOf ) ) ; } else { return - 1 ; } }
得到当时进程PID,如果没有得到，返回-1

@return 进程PID
得到当时进程PID 如果没有得到，返回 - 1