全部博文
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编辑 删除
数字的累加打印
import java.util.Scanner;public class NumTest { public static void main(String args[]){ &...
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java实现99乘法表
import javax.swing.*;public class MultiplicationTest extends JFrame. { public static void main(String args[]){ int sum; /*==和==*/ /*==i控制乘数，j控制被乘数==*/ ...
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EXTRACT的用法
•SELECT EXTRACT(YEAR FROM SYSDATE) FROM DUAL; return Current Year •SELECT EXTRACT(MONTH FROM SYSDATE) FROM DUAL; return Current Month •SELECT EXTRACT(DAY FROM SYSDATE) FROM DUAL; re...
