[置顶] JAVA学习路线

一:J2SE 面向对象-封装、继承、多态内存的分析递归集合类、泛型、自动打包与解包、AnnotationIO 多线程、线程同步 TCP/UDP AWT、事件模型、匿名类正则表达式反射机制2:数据库(Oracle或者MySQL)SQL语句多表连接,内外连接, 子查询等管理表、视图、索引、序列、约束等树状结构存储存储过程、触发器 数据库设计三范式、3:JDBCJDBC基础连接池 树状结构存储与展现Da

佛曰

此身如同臭皮囊,色身无常,此身非我,须当厌离

痛失新车

2009.11.23日晚,新车被盗。悲。

农夫养牛问题

一个农夫养了一头牛,三年后,这头牛每年会生出1头牛,生出来的牛三年后,又可以每年生出一头牛,请问农夫10年后有多少头牛?n年后呢?必要条件:生下来的全是母牛,且无不孕不育症,有专业公牛负责。斐波那契函数解决方法:    //总时间    String inputStr = 10;    //周期 &

文件上传

本人超级新人,折腾了一下午写的。用Hashtable存储表单项及其值,本来想做成兼容同名的,结果搞得个四不像,求指导。 FileUpload.java[code=Java]package business;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.i

新买的自行车

 

猜数字升级版

package org.blackice;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class GuestNumber {

        /**
         * @param args
...

猜数字游戏

package org.blackice.test;
import java.util.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class GuestNumber {

        /**
         * @param args
...

杨辉三角

public class YangHui{
        public static void main(String arg[]){
                int i=1,j=1,iOf=0;
                int iN = 20;
...

求阶乘

public class Factor{
        public static void main(String arg[]){
                int i=1,j=1,iR=0;
                int[] arr = new int[]{2,4,6,10};
...

java内存泄露

Java的一个重要优点就是通过垃圾收集器(Garbage Collection,GC)自动管理内存的回收,程序员不需要通过调用函数来释放内存。因此,很多程序员认为Java不存在内存泄漏问题,或者认为即使有内存泄漏也不是程序的责任,而是GC或JVM的问题。其实,这种想法是不正确的,因为Java也存在内存泄露,但它的表现与C++不同。随着越来越多的服务器程序采用Java技术,例如JSP,Servlet

Bankers Box Dimensions, Business Card Sizes & More: The Emergency Specialist's Guide to Getting It Right Under Pressure

A rush order expert answers the most common—and critical—questions about standard sizes, material choices, and avoiding costly last-minute mistakes in office and print procurement. [...]
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Why the 'Cheapest' Flyer or Card Option Usually Costs You More in the Long Run

A procurement manager with 6 years of budget oversight explains why focusing on total cost of ownership, not just the initial quote, is the only way to truly save money on marketing materials like flyers and greeting cards. [...]
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My Avery Template Checklist: How I Stopped Wasting Labels and Money

A step-by-step guide from someone who's messed up enough label orders to create a foolproof pre-print checklist. Learn how to verify templates, check printer settings, and avoid the common mistakes that cost time and materials. [...]
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The Envelope That Almost Cost Me $2,400: A Procurement Lesson in Specs and Speed

An office administrator shares a real story about a printing deadline gone wrong, what it taught her about vendor selection, and how to navigate the trade-offs between price, speed, and certainty for business materials. [...]
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Online Printers vs. Local Print Shops: An Admin's Guide to Making the Right Call

A practical comparison of online and local printing vendors from an office administrator's perspective, covering cost, turnaround, quality, and when to use each. [...]
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Market Trends: Where Poster Printing and Packaging Are Heading Next

A brand manager’s view of the shifting print market—posters meet packaging, digital reshapes demand, and consumers set the pace. [...]
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Is Digital Printing the Future of Sheet Labels?

A designer’s take on where label production is headed: digital adoption, inline quality, personalization, sustainability, and the new economics shaping sheet labels worldwide. [...]
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Digital Printing vs Flexographic Printing: A Technical Comparison for Sticker and Carton Workflows

A practical, process-level comparison of digital and flexographic printing for packaging and labels in Asia, with parameters, standards, and real-world trade-offs. [...]
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Sunbelt Moves Success Story: Corrugated Refit That Reduced Claims

A data-driven case study on how a regional moving-supplies retailer aligned print, substrates, and SKUs—leveraging corrugated specs and mixed print technologies—to cut damage claims and bring brand consistency across markets. [...]
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Data-Led Packaging That Cut Damage Claims and Lifted Repeat Sales

A North American moving-supply brand reframed packaging as a brand moment, using print standards, substrate choices, and finish tweaks to lower damage claims and grow repeat sales—told from a brand manager’s seat with the numbers and the messy bits. [...]
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