如何在调试java程序时在eclipse中执行某些功能？

Question

Like firebug for debugging javascript,

is there such a feature in eclipse? or do I need a plugin?

Answer 1

使用“显示”视图或更快一点：突出显示要运行的代码，然后右键单击/执行或按Ctrl + U.

Answer 2

You can use the Display view to execute commands while debugging. You can find this in Window -> Show View -> Display

Answer 3

选择该行并按ctrl+shift+D或ctrl+shift+I这将在弹出窗口中显示结果。

Answer 4

I believe that what you're looking for are "watch expressions". Just mark the piece of code in the source code view, right-click and select "Watch".

Answer 5

Use the debug shell! Coming from node, I was pretty used to being able to mess with my env variables at any time using node --inspect in chrome, and so it was imperative for me to find the same experience in eclipse without having to use JDB.

To open the debug shell, go to Window → Show View → Debug Shell

After you write the code you wish to run, simply highlight it, right click, and execute (⌘U also works)

Answer 6

I'm currently using Eclipse Photon (v4.8.0). Eclipse changed the "Display" View name to "Debug Shell View". Here, you can execute commands on-the-fly.

Answer 7

you can use the 'Display' view to evaluate expressions in eclipse.

Look under the debug list of views. It is a standard par part of the java tooling so you don't need a plugin

Answer 8

You can also create a scrapbook page (a .jpage) file and type your code in there. Then click run. It looked slightly more convenient when I tried it.

Answer 9

补充所有惊人的答案，对于mac用户是cmd + D.

Answer 10

Like others say, you use the Display view. But for some variants of Eclipse, it may be named differently. For instance, if you are using Spring Tool Suite as your Eclipse, the View name corresponding to Display view is Debug Shell.