Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.
Youth means a temperamental predominance of courage over timidity, of the appetite for adventure over the love of ease. This often exists in a man of 60 more than a boy of 20. Nobody grows old merely by a number of years. We grow old by deserting our ideals.
Years may wrinkle the skin, but to give up enthusiasm wrinkles the soul. Worry, fear, self-distrust bows the heart and turns the spirit back to dust.
Whether 60 or 16, there is in every human being’s heart the lure of wonders, the unfailing appetite for what’s next and the joy of the game of living. In the center of your heart and my heart, there is a wireless station; so long as it receives messages of beauty, hope, courage and power from man and from the infinite, so long as you are young.
When your aerials are down, and your spirit is covered with snows of cynicism and the ice of pessimism, then you’ve grown old, even at 20; but as long as your aerials are up, to catch waves of optimism, there’s hope you may die young at 80.
青春不是年华,而是心境;青春不是桃面、丹唇、柔膝,而是深觉的意志、恢宏的想象、炽热的感情;青春是生命的深泉在涌流。
青春气贯长虹,勇锐盖过怯弱,进取压倒苟安。如此锐气,二十后生有之,六旬男子则更多见。年岁有加,并非垂老;理想丢弃,方堕暮年。
岁月悠悠,衰微只及肌肤;热忱抛却,颓唐必至灵魂。忧烦、惶恐、丧失自信,定使心灵扭曲,意气如灰。
无论年届花甲,抑或二八芳龄,心中皆有生命之欢乐,奇迹之诱惑,孩童般天真久盛不衰。人人心中皆有一台天线,只要你从天上人间接受美好、希望、欢乐、勇气和力量的信号,你就青春永驻,风华常存。
一旦天线倒塌,锐气便被冰雪覆盖,玩世不恭、自暴自弃油然而生,即使年方二十,实已垂垂老矣;然则只要竖起天线,捕捉乐观的信号,你就有望在八十高龄告别尘寰时仍觉年轻。
Annotation: 译为注释或注解
An annotation, in the Java computer programming language, is a form of syntactic metadata that can be added to Java source code. Classes, methods, variables, pa
定义:pageStart 起始页,pageEnd 终止页,pageSize页面容量
oracle分页:
select * from ( select mytable.*,rownum num from (实际传的SQL) where rownum<=pageEnd) where num>=pageStart
sqlServer分页:
 
hello.hessian.MyCar.java
package hessian.pojo;
import java.io.Serializable;
public class MyCar implements Serializable {
private static final long serialVersionUID = 473690540190845543
回顾简单的数据库权限等命令;
解锁用户和锁定用户
alter user scott account lock/unlock;
//system下查看系统中的用户
select * dba_users;
//创建用户名和密码
create user wj identified by wj;
identified by
//授予连接权和建表权
grant connect to
/*
*访问ORACLE
*/
--检索单行数据
--使用标量变量接收数据
DECLARE
v_ename emp.ename%TYPE;
v_sal emp.sal%TYPE;
BEGIN
select ename,sal into v_ename,v_sal
from emp where empno=&no;
dbms_output.pu
public class IncDecThread {
private int j=10;
/*
* 题目:用JAVA写一个多线程程序,写四个线程,其中二个对一个变量加1,另外二个对一个变量减1
* 两个问题:
* 1、线程同步--synchronized
* 2、线程之间如何共享同一个j变量--内部类
*/
public static