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重点是看看我们的场景类,我们来测试一下性能差异,如代码清单28-15所示。
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代码清单28-15 场景类
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public class Client{
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public static void main(String[]args){
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//初始化对象池
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ExtrinsicState state1=new ExtrinsicState();
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state1.setSubject(“科目1”);
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state1.setLocation(“上海”);
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SignInfoFactory.getSignInfo(state1);
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ExtrinsicState state2=new ExtrinsicState();
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state2.setSubject(“科目1”);
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state2.setLocation(“上海”);
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//计算执行100万次需要的时间
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long currentTime=System.currentTimeMillis();
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for(int i=0;i<1000000;i++){
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SignInfoFactory.getSignInfo(state2);
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}
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long tailTime=System.currentTimeMillis();
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System.out.println(“执行时间:”+(tailTime-currentTime)+“ms”);
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}
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}
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运行结果如下所示:
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执行时间:172 ms
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同样,我们看看以String类型作为外部状态的运行情况,如代码清单28-16所示。
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代码清单28-16 场景类
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