Eclipse Installation and use

Installation of 1:eclipse

2: Write a HelloWorld case with Eclipse and finally output your name on the console

A: Create A Project
B: Create the package in the SRC directory. Cn.itcast
C: Create the class under the Cn.itcast package. HelloWorld
D: There is a method under the HelloWorld. public static void Main (string[] args) {}
E: There is an output statement in the main method. System.out.println ("Your Name");

Basic configuration of 3:eclipse space
A: Program compilation and operation of the environment configuration (generally do not change)
Window--Preferences--Java
Compilation environment: Compiler the highest version is selected by default.
Operating environment: Installed JREs will find the JDK you installed by default. We recommend that you configure the environment variables for Java.
Problem:
Low compile, high run. OK.
High compilation, Low run. No.
It is recommended that you compile and run the same version.

B: How do I get rid of the default annotations?
Window--Preferences--Java--code Style--code Templates
Select the content you do not want and edit it by editing it on the right.
Note: Please delete only the comments section, not the comments section.

C: Display and hide of line numbers
Display: In the left-most blank area of the code area, right-show line numbers.
Hide: Do the above action again.

D: Font size and color
A:java the font size and color of the code area:
Window--Preferences--general--appearance--Colors and Fonts--Java Modify--Java edit Text Font
B: Console
Window--Preferences--general--appearance--Colors and Fonts--Debug--Console font
C: Other documents
Window--Preferences--general--appearance--Colors and Fonts--Basic--Text Font

E: The form to mess up, how to do?
Window--Reset perspective

F: The console can't find it, what should I do?
Window--show View-console

4: Common shortcut keys
A: Formatted ctrl+shift+f
B: Import Package Ctrl+shift+o
If the class is in only one package, it shows itself
If the class is in more than one package, a box will pop up for you to choose
C: Comments
Single line: Comment ctrl+/, uncomment again.
Multiple lines: ctrl+shift+/,ctrl+shift+\
D: Code moves up and down
Select Code ALT + up/down arrow
E: View the source code
Check the class name (F3 or CTRL + mouse click)

5: How to improve development efficiency
A: Automatic generation of construction methods
A: Non-parametric construction method right---source--generate constructors from superclass in the code area
B: With the parameter construction method in the code area right-click--source--generate constructors using fields. --Finish
B: Auto-Generate GetXXX ()/setxxx () method
Right---source--generate Getters and Setters in the code area ...

Provides the corresponding shortcut key operation.
Alt+shift+s
Press the letter with an underscore.

C: How to inherit an abstract class and implement an interface.
The role of D:override
Indicates that the method is overriding the parent class. If the method declaration and the parent class do not match, an error is made.

6: Through the explanation of the shortcut keys and improve the development efficiency of some content to complete the following content
Custom Student class: Student
member variables;
Name
Age
Construction Method:
No reference
With reference
Member Methods:
GetXxx ()/setxxx ()
Gives a show () method that displays all the member information for the class.

Then, write a test class to test the student's code.
Studentdemo

7: Delete Project and import project
Delete Item
Select Item – Right-click – delete
Remove from Project area
Remove from hard disk

Import Project
Right-click in the project area to find the import
Find general, expand, and find
Existing Projects into Workspace
Click Next, then select the item you want to import
Note: The project name is selected here

8: A few small issues to note
How to view the path of a project
Select--Right---Properties--Resource--Location
Issues to be aware of when importing projects
Items with the same name cannot appear in the project area (new or imported)
A folder that you arbitrarily create is not imported as a project.
Modify Project Issues
Do not arbitrarily modify the project name
If you really want to modify it, don't forget the configuration file.
<name> change this to the name you changed after </name>

9: Everyone takes note of the document
A: Create a folder specifically for receiving items, and do not place them arbitrarily.
B: When the same project is received again, first go to the storage directory to delete the original item, then re-store, and finally refresh the project.
C: Every day against the project I write, I also create a practice project
Example: my project name Day11_eclipse
You'll create a project name Day11_eclipse_test

Advanced (Debug) debugging of code in 10:eclipse
Role:
Debug program
View program Execution Flow

How to view the program execution process
To see the program flow, you must set breakpoints.

What is a breakpoint:
is a marker, where to start.

How to set Breakpoints:
Where you want to see the program, you just double-click on the left side of the active program.

Where to set breakpoints:
where not to point.
Currently: we add on the first valid statement of each method.

How to run a program after you set a breakpoint:
Right--Debug as--Java application

See which places:
Debug: Where to test breakpoints
In this place, remember the F6, or click also can. See the execution of a row at a time.
Variables: Viewing variable variations of a program
Fordemo: The source file being viewed
Console: Consoles

How to go to breakpoints:
A: Double-click again
B: Find the debug view, variables interface, find breakpoints, and click, then see all the breakpoints, and finally click on that double fork.

Eclipse Installation and use