import java.text.DateFormat; import java.text.NumberFormat; import java.time.LocalDate; import java.time.LocalDateTime; import java.util.Date; import org.junit.Test; public class SimpleFactoryDemo { @Test protected void method1() { //介绍几个简单工厂案例。 DateFormat dateFormat=DateFormat.getInstance(); Date date=new Date(); System.out.println(dateFormat.format(date)+"n"); //这些都是一个工厂方法。你可以点击源码去看。 System.out.println(LocalDate.now()); System.out.println(LocalDateTime.now().hashCode()); System.out.println(LocalDateTime.now().hashCode()); System.out.println(LocalDateTime.now()); System.out.println(LocalDateTime.now()); System.out.println(LocalDateTime.now()); NumberFormat numberFormat=NumberFormat.getInstance(); NumberFormat PercentFormat=NumberFormat.getPercentInstance(); double num=2.3; System.out.println(numberFormat.format(num)+"n"+PercentFormat.format(num)); } }
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