[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

The PE/PP Thin-Wall Advantage in Beauty & Personal Care Packaging

A solution-focused look at thin-wall PE/PP for European brands: print choices, sustainability trade-offs, and practical implementation for skincare packaging lines. [...]
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How papermart Transformed Their Packaging with Digital Printing

A production manager’s contrast-led look at design decisions—balancing Digital vs Offset, finishes vs throughput, and unboxing moments vs cost—for brand-centered packaging that still runs on time. [...]
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Sustainable Box Packaging Design: What Works Now

A sustainability expert’s take on designing corrugated box packaging that balances brand impact, print choices, and circular economy goals in North America. [...]
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Label Psychology at Work: The 3-Second Test You Either Win or Lose

A production manager’s view on how label design choices—grounded in psychology and enabled by practical print decisions—decide shelf wins and operational outcomes. [...]
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How Texture and Spot UV Influence Purchase on European Shelves: The Psychology of Label Design

A packaging designer’s view on how tactile finishes, micro-emboss, and LED-UV Spot UV shape perception and pick‑up moments across European retail. With real mini-cases, practical specs, and the pitfalls we learned the hard way. [...]
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How Can Digital Printing and Tactile Finishes Shape Sustainable Brand Perception?

A sustainability-focused look at the psychology of packaging design: how visual hierarchy, substrates, and finishes—paired with digital printing—signal credibility and care without compromising recyclability. [...]
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Is Digital Printing the Future of North American Moving-Box Packaging?

A sustainability expert’s take on how digital, hybrid workflows, and low-impact inks are reshaping corrugated moving-box production in North America—balancing cost, carbon, and customer expectations. [...]
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By 2028, 60–70% of E‑commerce Packaging in Asia Will Be Designed for Circularity

A sustainability-focused forecast for Asia’s packaging print landscape—why circular design, material choices, and print technologies are converging, and how brands can navigate the next three years. [...]
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How Can Digital Printing and Soft-Touch Finishes Turn Stickers into Tiny Brand Advocates?

A sustainability-led look at the psychology behind sticker design—how finish, material, and color choices guide attention, signal values, and earn social shares across Europe. [...]
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A Designer’s Guide to Sustainable Poster Printing: From Idea to Impact

A practical, design-led guide for brands in Europe to create sustainable, high-impact posters—covering substrates, print technologies, finishes, and consumer insights, with pragmatic notes on cost, color, and CO2. [...]
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