It 18 palm Palm First day course summary

Learn today the first day of it 18 Palm Java Fundamentals Course:

Learning content:

1, Computer Basics and Windows shortcut keys and common settings

|---dos shortcut keys

1.dir:Directory

2.D:

Toggles the drive letter.

3.tab: Full button

SHIFT + TAB: reverse operation.

4.CD: Enter directory

5.mkdir:mkd/make Directory

Create a Directory

6. Catalogue

.. : Parent Directory

. : Current directory

7. Copying

CP Copy

8:del: Deleting files

Del a.txt

-S: Recursive

-q:quiet quiet

-f:force, forcing

del/s/q/f *.class

9.MV//Mobile

10.rmdir//delete directory, empty directory,/q/s

ipconfig//View IP Address

12.ping//View network connectivity

Ping 192.168.0.10

13. Configure the Hosts file to bypass DNS resolution

C:\Windows\System32\drivers\etc\hosts file

[Host]

....

192.168.0.67 XY

...

14.exit//exit

15.set//List all environment variables

16.win7 precautions

Installs 64 Ultimate Edition, has administrator user, can optimize.

17. Environment variable Configuration

18. Firewalls

On the firewall, Control Panel, open the firewall off.

|----Windows shortcut keys

[Text Edit]

CTRL + C//Copy

CTRL + V//paste

CTRL + X//Cut

CTRL + A//Select all

CTRL + Z//Undo

Ctrl + Y//Redo last Undo

CTRL + S//Save

'//reference identifier

tab//tab

SHIFT + TAB//Reverse action

ALT + TAB//Toggle Window

SHIFT + TAB + ALT//

Windows + D//Open Desktop

[]

Windows + R: Run

Services.msc//Services

Notepad//Notepad

Calc//Calculator

MSPaint//Drawing

Regedit//Registration Form

End//position cursor to end of line

Home//position cursor to beginning of line

SHIFT + END//Select the current position to the industry character

CTRL + ARROW keys //progression by Word

\R//return

\//line

\t//tab

EditPlus

-------------

ALT + Mouse: Select by column.

2,CPU Affinity

Start/affinifi 0x03 Notepad

The binary form of the 0x03 is: 0000 0011

To do this, allocate 1, 3rd CPU resources to Notepad

3,java Overview,

Ava features

-----------

1. Cross-platform, Sandbox (JVM)

2.oop:oriented Object program, OO programming. OOA Ood

Everything is an object.

JDK (Java Development Kit): Java Developer Kit

JRE (Java Runtime Environment): Java Runtime Environment

JVM (Java Virtual machine): Java VM

Where the JDK contains the JRE and some development tools,

The JRE contains some of the core class libraries required by the JVM and Java programs.

4, configuring environment variables

JAVA_HOME=D:\JAVA\JDK;

Path=%java_home%\bin;

Classpath=%java_home%\lib\dt.jar;%java_home%\lib\tools.jar;.

5, write the Java starter program HelloWorld

Problems encountered:

Like what:

1,CPU affinity settings, due to open a number of Notepad windows, so the effect of a moment did not check out, just beginning to think is the conversion problem, and later determined not to enter the problem after the close window re-test, success.

2,java environment variable installation, JDK and JRE installed in the same directory, environment variable configuration error.

Delete the directory, reinstall it after staging, and configure it successfully.

3, when configuring Classpath, missing, and also is the temporary environment variable setting, is not very familiar, classpath is essentially just the class search path order.

Questions that need help

3, focus on clear, path and classpath differences, temporary environment variables

This article is from the "Rookie Achievement Data Path" blog, please be sure to keep this source http://liubx.blog.51cto.com/11235064/1770186

It 18 palm Palm First day course summary