JSP获取CPU使用率、系统内存、虚拟机内存等情况(不用JNI)(5)

                String nice = tokenStat.nextToken();
                System.out.println(user + " , " + system + " , " + nice);
                user = user.substring(0, user.indexOf("%"));
                system = system.substring(0, system.indexOf("%"));
                nice = nice.substring(0, nice.indexOf("%"));
                float userUsage = new Float(user).floatValue();
                float systemUsage = new Float(system).floatValue();
                float niceUsage = new Float(nice).floatValue();
                return (userUsage + systemUsage + niceUsage) / 100;
            } else {
                brStat.readLine();
                brStat.readLine();
                tokenStat = new StringTokenizer(brStat.readLine());
                tokenStat.nextToken();
                tokenStat.nextToken();
                tokenStat.nextToken();
                tokenStat.nextToken();
                tokenStat.nextToken();
                tokenStat.nextToken();
                tokenStat.nextToken();
                String cpuUsage = tokenStat.nextToken();
                System.out.println("CPU idle : " + cpuUsage);
                Float usage = new Float(cpuUsage.substring(0, cpuUsage