package AbstarctTest;
/*
模板方法设计模式、多态的使用
*/
public class TemplateMethod {
public static void main(String[] args)
SubTemplate t = new SubTemplate();
t.spendTime();
}
}
abstract class Template{
public void spendTime(){
long start = System.currentTimeMillis();
code();
long end = System.currentTimeMillis();
System.out.println("花费的时间:"+(end - start));
}
public abstract void code();
}
class SubTemplate extends Template{
@Override
public void code() {
for (int i = 2; i < 1000; i++) {
boolean flag = true;
for (int j = 2; j <= Math.sqrt(i); j++) {
if (i % j == 0){
flag = false;
break;
}
}
if (flag){
System.out.println(i);
}
}
}
}
原文:https://www.cnblogs.com/guaner/p/13301775.html