[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

Optimizing Digital Printing for Maximum Efficiency in Label Workflows

A practical, engineer-level strategy to optimize digital label printing—from color control and substrate parameters to data-driven workflows and faster changeovers—grounded in North American shop realities. [...]
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Sticker and Label Printing Trends to Watch in Europe

A printing engineer’s take on where European sticker and label production is heading—technology uptake, sustainability, and personalization—grounded in shop-floor realities. [...]
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How Does Digital Poster Printing Deliver Consistent Color at Same‑Day Speed?

A production manager’s view on the evolution of digital poster printing—how UV‑LED and inkjet workflows achieve fast turnarounds, stable color, and practical quality control for North American retail programs. [...]
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Digital Label & Sticker Printing to Grow 7–9% by 2026: Sustainable Design Takes the Brief

A packaging designer’s view on how sustainability, personalization, and on-demand models will reshape custom sticker and label printing worldwide—complete with practical trade-offs and real-world signals. [...]
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Digital and UV Printing for Retail and Business Cards: Applications and Benefits

Practical ways small retailers and startups use digital and UV printing across packaging, point-of-sale, and business cards—what works in real production and why. [...]
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Laser and Inkjet Printing Process Control for Sheet Labels

A practical, sales-focused technology analysis on controlling laser and inkjet workflows for sheet labels—covering process mechanics, critical parameters, color consistency, common issues, and optimization strategies with real-world data and lessons learned. [...]
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How Has Hybrid Printing Evolved to Deliver Low-Carbon Corrugated Packaging?

A sustainability expert’s take on the technical evolution of hybrid packaging printing for corrugated shipping boxes, the process parameters that truly matter, and the compliance choices shaping global low‑carbon production. [...]
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Solving Common Flexographic Print Quality Issues on Corrugated Shipping Boxes

A brand manager’s diagnostic playbook for fixing color drift, crush, and registration in flexo printing on corrugated and kraft shipper boxes—without losing the soul of your brand. [...]
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Label Printing Trends to Watch in Asia

A designer’s view on where label printing in Asia is heading—from market momentum to digital workflows and shifting consumer expectations. [...]
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Practical Strategies to Optimize Hybrid Printing for Custom Box Production

A printing engineer’s field guide to dialing in hybrid (digital + flexo) workflows for custom boxes, with actionable parameters, color control, and substrate choices for North American converters. [...]
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