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).

Ctrl-Alt-Down:将当前行或所选行复制到下方

Ctrl-Alt-Up::复制当前行或选定的行到上面

Ctrl-Shift-L:弹出快捷键列表

看到Windows /首选项- >常规- >键。

在Eclipse中，我们可以将任何命令分配给任何给定的操作 从菜单栏转到 窗口>首选项 然后寻找钥匙 然后搜索复制行 然后单击复制行，然后单击绑定中的命令 并执行一个命令，你想使用复制行我使用ctrl+shift+d 你可以选择任何你想要的

在Mac上，我尝试了linecopypaste，效果很好 cmd+c ->复制当前(未选中)行，就像Vi/Vim中的“yy”命令一样 cmd+v ->粘贴，就像Vi/Vim中的“p”命令一样

感谢Larsch的工作!

PD:在优胜美地使用Eclipse Luna 4.4.2

我已经为Eclipse编写了linecopypaste插件，它模仿了Visual Studio的复制/剪切/粘贴行为。我还发现了copycutcurrentline，它似乎做了同样的事情。

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).