如何检查Java中的CPU和内存使用情况？

如果你正在专门寻找JVM中的内存：

Runtime runtime = Runtime.getRuntime();NumberFormat format = NumberFormat.getInstance();StringBuilder sb = new StringBuilder();long maxMemory = runtime.maxMemory();long allocatedMemory = runtime.totalMemory();long freeMemory = runtime.freeMemory();sb.append("free memory: " + format.format(freeMemory / 1024) + "<br/>");sb.append("allocated memory: " + format.format(allocatedMemory / 1024) + "<br/>");sb.append("max memory: " + format.format(maxMemory / 1024) + "<br/>");sb.append("total free memory: " + format.format((freeMemory + (maxMemory - allocatedMemory)) / 1024) + "<br/>");

但是，这些仅应作为估计…