[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

Digital Printing Powers NordMeal’s Cold‑Chain Packaging Success

A Europe-based meal-kit brand uses digital and flexographic printing, food-safe inks, and standardized corrugated packaging to stabilize color, cut scrap, and meet EU compliance—featuring insulated and cooler box pilots and a practical view on reuse and low-cost moving box questions. [...]
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The Human Element: Skilled Labor’s Role in Automated Avery-Format Label Operations

How skilled operators keep economics, compliance, and sustainability on track in automated Avery-format label production, with data-backed pathways for SKU complexity, CO₂/pack and kWh/pack reduction, readability, UL 969 durability, and commodity indexation. [...]
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Enhancing printrunner Interactivity: AR/VR Technology in Packaging

AR/VR-enabled packaging cut proof-to-press ΔE2000 from 3.1 to 1.3 and raised scan success from 93.1% to 98.7% in 10 weeks (N=84 SKUs), while false rejects fell 0.9%→0.3% @185–190 °C / 0.9 s / 120 m/min using SMED parallel kitting, recipe locks, and airflow re‑zoning, validated against GS1 Digital Link v1.2 and G7 Master Colorspace cert# CS-24-1187 with EU 2023/2006 §5 records (DMS/REC-AR-031). [...]
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The Gig Economy in Design: Freelance Talent for Sticker Labels and Packaging

How freelance creatives raise value for StickerYou-style custom labeling: MEA pet-care demand, EPR fee modulation, scan-data governance, UL 969 durability, and cost-to-serve economics—complete with metrics, standards, and governance actions. [...]
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Optimizing Offset Printing for Cost-Efficiency and Speed in upsstore Production

Offset centerlining, UV-LED dose control, SPC, and OT segmentation lifted FPY to 96.8% (P95) at 160–170 m/min while cutting kWh/pack by 17–19% with a 7.5-month payback, validated under ISO 12647-2 §5.3 and Annex 11 e-records. [...]
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Flower and Plant Packaging Solutions: The Application of ninja transfer in Freshness and Protection

A technical guide for horticultural packaging teams on deploying ninja transfer DTF labeling to protect print, preserve freshness, and meet recyclability and CO₂/kWh targets. Includes lab-to-field correlation, MEA energy baselines, and HORECA overrun governance. [...]
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Digital Transformation in Packaging: A Case Study of packola Implementation

Quantified case study of a packaging converter’s digital transformation with packola: vision grading and false-reject tuning, SMED playbook, recyclability outcomes, Amazon cost-to-serve modeling, and compliant e-signature—anchored by ISO/GxP clauses, DMS records, and verified KPIs. [...]
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Reducing Waste: How fedex poster printing Contributes to a Circular Economy

A practitioner’s playbook that connects Annex 11/Part 11 record governance, energy/CO₂ per pack, replication SOPs, and cost-to-serve for poster programs, with verifiable metrics and standards. [...]
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Automation in Packaging Lines: Boosting Efficiency for ecoenclose

A technical playbook for automating packaging lines—color conformance, energy per pack, vision grading, data governance, and quantified savings—with validated records and standards for eco-conscious corrugated and label operations. [...]
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The Power of Touch: Tactile Experiences with onlinelabels

A technical playbook for tactile label production—covering acceptance windows, training, short-run economics, CAPA agility, and cost-to-serve—grounded in measurable outcomes, standards, and a validated customer case. [...]
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