演示程序报告jvm花了多长时间装载这些类。
The demo reports on how long it takes the JVM to load the classes.
装载类之后，应用程序报告它装载了多少个类以及花费的时间，见图 2
Once the classes have loaded, the application reports how many it loaded and how long it took, as shown in Figure 2
程序报告2.4 gl示例描述了使用4gl特性的报告，如清单13所示。
The example program report2.4gl describes the report using 4gl feature, as shown in Listing 13.
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