java基础 day11 包 eclipse的设置使用访问权限 Object 常用快捷键

偏执的太偏执、 2023-06-08 03:18 3阅读 0赞

# 包：![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70] #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 1]  
== 从其它文件调用其他文件里的类：==![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 2]

## eclipse的使用： ##

改字号：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 3]  
设置智能提示：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 4]  
设置编码格式为utf-8:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 5]  
换主题：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 6]  
在项目中添加已有的类：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 7]  
![在这里插入图片描述][20191016223021784.png]  
包名太长：![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 8]  
导包（自己或他人）：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 9]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 10]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 11]  
修改名字:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 12]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 13]  
![在这里插入图片描述][20191016224643783.png]

## 访问权限： ##

1.类的访问权限：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 14]  
2.类成员访问权限：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 15]  
![在这里插入图片描述][20191021225100328.png]  
2.1程序调试：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 16]  
3.Object:  
![在这里插入图片描述][20191021230058828.png]  
eg.:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 17]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 18]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 19]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 20]  
tip:  
![在这里插入图片描述][20191022193739667.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 21]  
定义实体类：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 22]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 23]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 24]

### 常用快捷键： ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 25]  
![在这里插入图片描述][20191022205405450.png]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70]: /images/20230531/bbf854196a0847c0932c6b6fbffcf2e4.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 6]: /images/20230531/849945f559114b76bcffc9027c9127ef.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 7]: /images/20230531/30dfac82cbaf4f95947ea234bd4bb11f.png
[20191016223021784.png]: /images/20230531/fb5b6942b6684a15888d5bc46dc8a089.png
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[20191016224643783.png]: /images/20230531/0e05f10d4aa343bf8aa6bcb8b3eb1349.png
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[20191021225100328.png]: /images/20230531/c428b6fd3845403380c316c072b44708.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxNjk0MDQ5_size_16_color_FFFFFF_t_70 16]: /images/20230531/3f7b4ba2c01948f9a2b1c65ad8684039.png
[20191021230058828.png]: /images/20230531/65c7b1f7bb5444e9bdf022a8e4fc27df.png
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[20191022193739667.png]: /images/20230531/57572c9110cb430db32d12e7abcd8ed9.png
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[20191022205405450.png]: /images/20230531/33206c8ead864c31ad28841ee8a73bf6.png