摘要：public class FindErrors { public static void main(String[] args) { System.out.println("Jobs Started!"); // Searching loop log directory String filename = "c:\\wolfeTest\\log\\"; File logDir = new File(filename); File logList[] = logDir.listFiles(); Map errorsMSG = new HashMap(); 阅读全文

摘要：有很多时候eclipse经常报这个错：java.lang.NoClassDefFoundError............解决方案：Project -> Properties -> Java Compiler--> Building-->勾选： Enable project specific setting。取消勾选： Abort build when build path errors occur。OK 了。 阅读全文

摘要：一、修改字段名：Oracle：ALTER TABLE tableName RENAME COLUMN oldColumnName TO newColumnName;eg:ALTER TABLE web RENAME COLUMN wen_name TO web_name;MySQL：ALTER TABLE tableNameCHANGE oldColumnNamenewColumnNamenewColumnDataType;eg:ALTER TABLE bonus CHANGE ename empname VARCHAR(50);二、修改字段长度：Oracle：ALTER TABLE tabl 阅读全文

摘要：删除表：DELETE FROM tablename;DELETE FROM tablename WHERE clause;TRUNCATE TABLE tablename;Oracle 在删除表的时候会把表放到回收站RECYCLE BIN， 可以使用PURGE RECYCLEBIN 命令来清空回收站。另外，回收站里面的表可以还原。表插入数据：INSERT INTO tablename(column1[,column2,...]) VALUES (value1[,value2,...]);INSERT INTO tablename VALUES (value1[,value2,...]);INS 阅读全文

摘要：ORACLE 最简单的备份与恢复的例子：导出： exp scott/tiger@orcl file=c:\wolfeTest\export\scott_data.dmp;导入： imp scott/tiger@orcl file=c:\wolfeTest\export\scott_data.dmp;注意：在数据文件倒入之前保证表不存在，如果表已存在，则不能覆盖。MySQL 导出SQL 语句：CREATE DATABASE dbname; 创建数据库CREATE TABLE tablename; 创建表SHOW DATABASES; 显示数据库信息，有那些可用的数据库USE dbname; .. 阅读全文

摘要：Good afternoon everyone, I want to tell you that I’d like to travel the Inner Mongolia Grasslands best.There are no big house, no big mountain, no big river, just a lot of horse. I like the feeling to ride on horseback and no matter which route I take, I can’t catch the end. I like the feeling tha.. 阅读全文

摘要：Good afternoon everyone, I'm so glad to join this English Hour again with you after my two weeks leave. I miss you all very much.As we all know, it’s harmful when you take a long site in office. Now, I’d like to share you some methods to keep your health during your office work.(First), you can 阅读全文

摘要：第一：普通类导出jar包，我说的普通类就是指此类包含main方法，并且没有用到别的jar包。1.在eclipse中选择你要导出的类或者package，右击，选择Export子选项；2.在弹出的对话框中，选择java文件---选择JAR file，单击next；3.在JAR file后面的文本框中选择你要生成的jar包的位置以及名字，注意在Export generated class files and resources和Export java source files and resources前面打上勾，单击next;4.单击两次next按钮，到达JAR Manifest Specific 阅读全文