查看如何使eclipse默认快捷键ctrl alt↓工作

选择行:将光标放在要复制的行上，如果光标在行尾，则选择行，如果光标在行首，则选择ShiftHome 在ctrl alt↓或ctrl alt↑下面或上面复制一行(默认预期行为)，但这里的关键是你需要选择一行/块

一些答案集中在禁用Windows或任何其他操作系统的屏幕旋转，这适用于防止意外按键。

Ctrl +alt+下/上/左/右作为热键优先于eclipse设置。作为替代，我尝试了不同的方法。

Step 1: Triple click the line you want to copy & press `Ctrl`-`C`(This will
select & copy that entire line along with the `new line`).
Step 2: Put your cursor at the starting of the line where you want to to paste
your copied line & press `Ctrl`-`V`.(This will paste that entire line & will
push previous existing line to the new line, which we wanted in the first place).

另一种快捷方式是按Ctrl+Shift+L并选择要执行的命令并按enter

这是初学者的最佳练习。

You have to turn off the graphics hot keys that flip the screen. If you're on Windows, you need to right click on the Windows desktop and select "Graphics Properties..." (or something similar depending on your version of Windows). This will bring up a screen where you can manage graphics and display options, look for a place where you can disable hot keys, sometimes it's hidden under something like "Options and Support". Turn off the CTRL + ALT + ↑ and CTRL + ALT + ↓ hotkeys (alternatively you can just disable all graphics hot keys if you're not using them).

我用的是Windows 7。要禁用它，我所做的就是右键单击Windows桌面，选择“图形属性”->选项。然后在结果屏幕的左侧选择“关闭”。禁用所有热键组合。我认为没有办法只禁用其中一些，要么全部禁用，要么完全禁用。反正我也不需要。所以现在crtl+Alt+Up和crtl+Alt+ down工作为我在Eclipse和我的屏幕保持不变:) 我认为类似的选项在其他版本的Windows中也存在。玩得开心!

将文本从行首复制到光标位置:ctrl + insert

这是有效的，为我节省了很多时间。