williamamg-优快云博客

原创列表中的Copy与DeepCopy

import copyoriginalList = ['a','b',[1,2]]passingList = originalListprint('OriginalList:')print(originalList)copyList = copy.copy(originalList)deepcopyList = copy.deepcopy(originalList)print('__

2016-12-12 10:19:01 597

原创完整的写一个Python小程序

def collatz(number): if number%2 == 0: print('number/2') return number / 2 elif number%2 == 1: print('3 * ' + str(number) + ' + 1') return 3*number+1print('th

2016-12-06 18:01:10 12969 3

原创 Python的While循环与逻辑判断语法

ico = 0while ico != 5: print('Type "your name"!') name = input() ico+=1 if name != 'your name': print('you have' + str(5 - ico) + 'times left') elif name == 'your

2016-11-17 11:13:42 1339

原创 RedHat Enterprise 7.2（RHEL7）安装Oracle 12.X报compat-libstdc++包的解决办法

1. 注册RedHat 开发者账户（Developer account）2.下载链接https://access.redhat.com/downloads/content/rhel---7/x86_64/2463/compat-libstdc++-33/3.2.3-71.el7/x86_64/fd431d51/package3. rpm -ivh 对应安装成因：The co

2016-07-20 11:23:14 5092

原创 Oracel与Java的自学，辩证的学习，而不是吃饱了骂厨子

最近两年，我一直从互联网下载相关的学习视频来加快相关技术的学习进度。在进程中，偶尔通过Google翻找原文资料或含有中英文双语对照翻译之资料做debug，其中会发现视频中有瑕不掩瑜之处。然后返回到国内论坛，则会在某些BBS上看到一些吃饱了骂厨子的状况。技术的应用，能否达到设计目的是第一位的。优雅且正确的语法重要，但没那么重要。况且，技术本身是一个过程——Java在变动，Oracle

2016-07-09 15:06:49 629

原创用JDBC连接Oracle数据库 via Eclipse

老方法链接数据库是这样的：Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");Connection conn = DriverManager.getConnection("jdbc:odbc:testsp","system","123");从Stack overflow得知，"For Java 8 you cannot use the JDBC-O

2016-07-08 11:29:36 887

原创 Oracle: 对数据分组（max，min，avg，sum等）的想法

1. 分组函数只能出现在选择列表（select），having，order by 子句中；2.如果在select语句中同时包含有group by，having，order by，那么，他们的优先级是，group by，having和order by3.在选择列种，如果有列，表达式和分组函数，那么，这些列和表达式，必须有一个出现在group by子句中！EMPNO ENAME JO

2016-07-05 13:25:51 10554

原创 Oracle创建用户,删除用户及删除用户报错之应对。

SQL> create user will identified by 123;create user will identified by 123SQL> grant connect,resource to will;Grant succeededSQL> commit;Commit complete//删除失败SQL> drop user will cascade;drop

2016-06-30 13:56:21 1353

转载 CJV_1——简单的Applet程序

package WelcomeApplet;import java.awt.*;import java.awt.event.*;import java.net.*;import javax.swing.*;public class WelcomeApplet extends JApplet { public void init(){ EventQueue.invoke

2016-06-25 01:10:48 365

转载 CJV_1——ImageViewer via swing

package ImageViewer;import java.awt.EventQueue;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.File;import javax.swing.ImageIcon;import javax.swing.JFileC

2016-06-24 16:13:16 333

转载 CJV_I——helloworld中的字符串数组与简易for循环

package Welcome2Java;public class Welcome { public static void main(String[] args) { String [] greeting = new String[3]; greeting[0] = "Welcome to Core Java"; greeting[1] = "by Cay Horstmann

2016-06-24 16:02:13 708

原创匿名类，键盘事件相应，KeyAdapter，KeyPressed

import java.awt.*;import java.awt.event.*;public class TestKeyEvent { Frame fr = new Frame("KeyEvent..."); public TestKeyEvent(){ fr.setLocation(300, 300); fr.setVisible(true); fr.pack();

2016-06-06 09:44:49 6541

原创匿名类，迭代器，WindowAdapter，Point，MouseAdapter，paint

import java.awt.*;import java.awt.event.*;import java.util.*;public class TestMyMouseAdapter { public static void main(String[] args) { new MyFrame("Drawing...."); }}class MyFrame exten

2016-06-06 07:59:36 398

原创内部类，非局部类

import java.awt.*;import java.awt.event.*;public class TestInnerClass { public static void main(String[] args) { new TFrame(); }}class TFrame extends Frame{ TextField tf1, tf2, tf3; TFra

2016-06-04 00:23:58 434

原创 GUI中的事件绑定

import java.awt.*;import java.awt.event.*;public class TFMath { public static void main(String[] args) { new TFrame(); }}class TFrame extends Frame{ TextField tf1, tf2, tf3; TFrame(){

2016-06-04 00:22:12 910

原创多按钮的事件相应，getActionCommand & setActionCommand篇

import java.awt.*;import java.awt.event.*;public class TestAction2Event { public static void main(String[] args) { Frame frm = new Frame("Two Button Event"); frm.setBounds(300, 300, 400, 400

2016-06-03 11:19:41 3337

原创事件模型的基础响应

import java.awt.*;import java.awt.event.*;public class TestActionEvent { public static void main(String[] args) { Frame fr = new Frame("Action Event"); fr.setBackground(new Color(20,100,50))

2016-06-03 09:30:57 395

原创一个框架10个按钮，嵌套Panel，同时Panel嵌套Panel。GridLayout,BorderLayout,

import java.awt.*;public class TestTenButtons { public static void main(String[] args) { new MyFrame("Java Frame",200,200,400,500); }}class MyFrame extends Frame{ private Panel pup = new Pa

2016-06-02 15:10:13 835

原创 Panel in the Frame，手动居中

import java.awt.*;public class TestCenterPanel { public static void main(String[] args) { new SelfFrame("FrameWithPanel", 50,50,400,400); }}class SelfFrame extends Frame{ private Panel pn

2016-06-01 15:43:31 634

原创 AWT，Panel入门，多框架，多Panel

import java.awt.*;public class TestMultiPanel{ public static void main(String[] args) { SubFrame f1 = new SubFrame(100,100,200,200,Color.BLUE); SubFrame f2 = new SubFrame(300,100,200,200,Color

2016-06-01 15:06:51 1217

原创 AWT入门 Frame篇

import java.awt.*;public class TestMultiFrame { public static void main(String[] args) { SubFrame f1 = new SubFrame(100,100,200,200,Color.BLUE); SubFrame f2 = new SubFrame(300,100,200,200,Co

2016-06-01 15:05:27 755

原创 ToyProgram UDP server and client with IOStream

import java.io.*;import java.net.*;public class TestUdpServerlong2array { public static void main(String[] args) { try{ DatagramSocket dtskt = new DatagramSocket(8888); byte[] buffer = ne

2016-05-31 14:07:10 312

原创 Java网络编程进阶版

服务器端：import java.net.*;import java.io.*;public class TestSend_OutServer { public static void main(String[] args) { try{ ServerSocket sSocket = new ServerSocket(8888); while(true)

2016-05-23 20:15:01 652

原创 Java网络编程入门

服务器端：import java.io.*;import java.net.*;public class TestTcpServer { public static void main(String[] args) { try{ ServerSocket serS = new ServerSocket(6666); while(true){ Socket s

2016-05-23 20:11:19 382

原创 Toy Program:线程 alive

public class TestThreadaLive { public static void main(String[] args) { SubThread sbt = new SubThread(); Thread tr = new Thread(sbt); tr.start(); for(int i = 0; i < 50; i++){ System.ou

2016-05-21 17:50:59 517

原创 Toy Program——线程同步。涉及wait(),notifyall(),runnable,toString

public class TestProducerConsumer { public static void main(String[] args) { SyncStack ss = new SyncStack(); Producer pd = new Producer(ss); Consumer cs = new Consumer(ss); new Thread(pd).st

2016-05-20 14:17:39 442

原创 Toy Program——线程的优先级Priority

public class TestThreadPriority { public static void main(String[] args) { Thread t1 = new Thread(new SubThread("Thread_1")); Thread t2 = new Thread(new SubThread("T_H_R_E_A_D_-_-_2")); t1.set

2016-05-10 21:57:01 461

原创通过Interface的Runnable实现多线程的Yield，含setName，getName

public class TestThreadYield { public static void main(String[] args) { SubThread subThread_1 = new SubThread("subThread_1"); SubThread subThread_2 = new SubThread("subThread_2"); Thread th1 =

2016-05-10 21:09:04 745

原创通过interface的Runnable实现线程合并（join），涉及setName,getName,sleep

public class TestThreadJoin { public static void main(String[] args) { SubThread sub = new SubThread("AllByMyself"); Thread hst = new Thread(sub); hst.start(); try{ hst.join(); }catc

2016-05-10 20:45:41 788

原创线程玩具：打断（interrupted）

import java.util.*;public class TestInterrupt { public static void main(String[] args) { SubThread subt = new SubThread(); Thread thr = new Thread(subt); thr.start(); try{ Thread.slee

2016-05-09 01:26:33 987

原创 Toy Program 基础线程入门 via “extends Thread”

public class TestThreadviaClassThread { public static void main(String[] args) { SubThread sthr = new SubThread(); sthr.start(); for(int i = 0; i < 100; i++){ System.out.println("MainThre

2016-05-08 23:19:24 456

原创 java.io.*下的日志功能入门

import java.util.*;import java.io.*;public class TestPrintStream2log { public static void main(String[] args) { String str = null; BufferedReader br = new BufferedReader(new InputStreamReader(

2016-05-08 22:39:13 330

原创在执行期间制定文件位置并读取。利用BufferedReader与FileReader

import java.io.*;public class TestPrintStreamToReadingFile { public static void showOut(String str, PrintStream pstr){ try{ BufferedReader br = new BufferedReader(new FileReader(str)); Stri

2016-05-08 16:16:33 426

原创 IO.Util中的log（日志）

import java.util.*;import java.io.*;public class TestPrintStream2log { public static void main(String[] args) { String str = null; BufferedReader br = new BufferedReader(new InputStreamReader(

2016-05-08 16:14:25 257

原创对象序列化输出 Serializable

import java.io.*;class DataGroup implements Serializable{ transient int h = 31; int i = 44; double j = 17.15; int k = 91;}public class TestObjectIO { public static void main(String[] args) {

2016-05-08 16:11:05 514

原创为了解决直接把double数写入文件，用了ByteArrayOutputStream和DataOutputStream系列

import java.io.*;public class TestDataStream { public static void main(String[] args) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); DataOutputStream dos = new DataOutputStream(bao

2016-04-28 22:50:55 1077

原创接受屏幕输入转换为大写 via InputStreamReader & System.in

import java.io.*;public class TestTransformReader { public static void main(String[] args) { InputStreamReader isr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isr

2016-04-26 23:44:41 418

原创建立更可靠的开发方法——基于官方API文档的学习尝试之异常处理

专科学习中，老师不曾教授过如何阅读官方开发文档，即便曾经带小组做Cobol项目的debug，无非是阅读日本开发人员编纂的开发文档。阅读官方文档完全摸不到头脑，而且语言关不是问题，但仍旧花的时间较长，主要是打消挫败感的时间较长——4天升了Blizzard《风暴英雄》15级，英雄雷诺升到8级。玩一个新的游戏也要读文档——理解英雄特长，在不同地图内，根据对面不同对手，参照技能设计升级技能点。

2016-04-26 23:42:43 498

原创处理流中的转换流。InputStreamReader & OutputStreamWriter

import java.io.*;public class TestTransform { public static void main(String[] args) { try{ //create a text file OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("E:\\sy

2016-04-26 11:17:06 368

原创 BufferedReader & BufferedWriter

import java.io.*;public class TestBufferReader { public static void main(String[] args) { try{ BufferedWriter bw = new BufferedWriter(new FileWriter("E:\\sync\\Java\\TestBufferReader\\randomNu

2016-04-26 11:12:32 315

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