[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

Soft Packaging Lightweighting ROI: How Amcor AmLite Helps U.S. Brands Save $2.4M Annually

A clear, data-backed ROI analysis for U.S. packaging and printing leaders on Amcor’s AmLite lightweighting. Includes ASTM test evidence, the Nestlé Nescafé global case, and a balanced view of recyclable packaging realities and infrastructure. [...]
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Gorilla Tape vs 3M vs Duck: Real-World Packing & Repair Test for Packaging & Printing

A practical, real-world comparison of Gorilla, 3M, and Duck tapes for packing, shipping, signage, and DIY repairs—focused on strength, weather resistance, value, and the right adhesive choice for fabric and plastics. [...]
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3M Adhesive Solutions for U.S. Packaging and Print: From Weatherstripping and Strip Caulk to Command Velcro Strips

A data-driven guide for U.S. packaging and print operations on applying 3M weatherstripping, 3M strip caulk, and 3M Command velcro strips alongside Scotch box sealing tapes and VHB. Includes ASTM/ISO-backed performance, ROI case studies, sustainability credentials, and practical guidance on flyer sizes and retail tote integration. [...]
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Corrugated Box Procurement TCO Analysis: Georgia-Pacific vs Low-Price Suppliers (A 10-Year View)

A data-driven total cost of ownership comparison for corrugated box procurement, explaining why Georgia-Pacific’s vertically integrated, FSC-certified supply chain and VMI services reduce long-term costs and risk for high-volume, automated operations—despite higher unit prices. [...]
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Fillmore Container Company Guide: No-MOQ Packaging, Smart Shipping, Deals, and Creative Tissue-Paper Flowers

Learn how Fillmore Container helps small businesses with no-minimum packaging and same-day shipping. Get practical tips on finding a Fillmore Container coupon or promo, estimating the cost of a Priority Mail Flat Rate Envelope for sample shipments, what to know about an SSMA catalog, and how to make a flower with tissue paper for beautiful unboxing. [...]
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FedEx Office Printing & Packaging Guide for U.S. SMBs and Events

A practical, ROI-focused guide to FedEx Office printing and packaging services—covering speed, small-batch orders, on-site design, distributed production, urgent trade-show rescue, non-profit flyers, manuals (e.g., Xlerator hand dryer), and passport renewal envelope tips. [...]
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2025 Sustainable Packaging Playbook for DTC Brands: EcoEnclose Logo Use, Shipping Policies, and Sizing for Totes, Wagons, and Bottles

A data-backed guide for U.S. eCommerce and B Corp-minded brands covering proper EcoEnclose logo use, free vs carbon-neutral shipping, and right-size packaging for vegan leather tote bags, water bottles, and bulky items—aligned with 2025 regulations like California SB 54. [...]
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A Designer’s Guide to Turning Stickers into Brand Stories

A packaging designer’s field notes on translating brand values into sticker design, choosing the right print tech, and using seasonal editions to spark attention—without losing color, character, or control. [...]
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Why Engineered Corrugated Box Programs Deliver Color Control, Faster Changeovers, and SKU Agility

A brand manager’s view on the technical advantages of structured corrugated box programs for moving, storage, and e-commerce packaging in Europe. [...]
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The Psychology of Label Design: Why Small Cues Win on Busy European Shelves

A brand manager’s view on the subtle psychology behind labels that get picked up, with real cases, practical tech choices, and seasonal tactics that work across Europe. [...]
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