It 18 palm Palm 16th Day Course Summary

Finish the 16th day of it 18 Palm Java Foundation Course today:

Learning content:

Serialization of

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The object is used for inter-network transmission or for this secondary storage.

Also called serialization

Procedure to convert Java objects to byte[]

Java.io.Serializable//serializable interface, identification. Jvm.

Serialized version UID://

Deep replication refers to copying an entire object graph.

Transient://Temp keyword.

Objectinputstream/objectouputstream

Bytearrayinputstream/bytearrayoutputstream

Read (char c) write (byte[])

DataInputStream//Data input stream

DataOutputStream//Output output stream

byte[] bytes = "China". GetBytes ("iso-8859-1");

New String (Bytes, "iso-8859-1");

String.getbytes ("CharSet"); Encode a string

New String (Bytes, "charset") '; Decoding

Use the Bin/native2ascii tool provided by the JDK to implement Chinese transcoding:

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1. Create a text file (GBK encoding, it is recommended to use Notepad. ) 1.txt

[1.txt]

You ABC good, China!

2. Enter the 1.txt directory with cmd

Cmd

3.native2ascii-encoding gb2312 1.txt 2.txt

Ui:user interface

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1.GUI://graphic User interface

2.Label://tags, cannot be edited, display text

3.Button//button

4.Checkbox//check box

5.RadioBox//radio button

6.Menubar//Menu bar

7.Menu//Menu

8.MenuItem//menu item

9.Toolbar//Toolbar

10.Statusbar//status bar

11.TitleBar//title bar

12.Scrollbar//scroll bar

13.Taskbar//taskbar

14.active//Activated

15.deactive//passivated

16.TextField//text box, single line

17.TextArea//Text field, multiple lines

18.password//Password box

Socket

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1. Sockets.

2.client/server:

3.ServerSocket://server-side socket, receive request.

4.ss.accept ()//

Tcp

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1.transfer control protocal, transmission protocol

2. You must first establish a connection, a reliable protocol. No data loss.

3.

4.

5.

Udp

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1.User Datagram protocal, User Datagram protocol.

2.

3.

4.

5.

Mvc

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1.model-view-controller, Model View Control

2.

3.

4.

Problems encountered:

1.GUI component layout is not familiar,

2.java serialization

3.Socket is used for what, tcp/udp difference and contact

Questions that need help

1.MVC Frame

2.tcp/udp

3.GUI design includes a set of tags, menu bar, toolbars, password boxes, etc., combined use.

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It 18 palm Palm 16th Day Course Summary