如何删除JRE系统库中的.jar文件？

Question

My homework assignment for my class gave me a lot of .java files to import, I was fiddling with eclipse trying to find a way to import them in the package (I did not realize I could just drag and drop..), but instead I imported them in the JRE System library folder, where I can no longer remove them.

I understand the mistake that I made, however I cannot find a way to remove these files from JRE 1.7.

I re-installed eclipse, and even deleted the JRE7 folder and reinstalled JRE. But the files are still here.

Answer 1

转到窗口->首选项-> Java->已安装的JRE->选择jre->编辑->在jar上单击以删除->在右侧菜单上删除。

Answer 2

Easier way would be

File->new java project->configure jre(blue text)->(it will show the installed jres and you can remove any which you dont want)

Answer 3

Right click on "Exercise19" project => Build Path => Configure build path Goto to "libraries" tab. and remove this system library and click ok. Above step may give some complication errors in your project.

Then try adding a new library (the correct one) via Eclipse "Window => Preferences => Java => Installed JREs"

Then go back to project => Build Path => Configure build path ("libraries" tab) and "Add library" => "JRE System Library", click ok.

it should fix the issue.

Answer 4

Q. How to remove JRE System Library from project?

Ans : Go to project then

Right click on project---> Build Path --> Configure build path

Now there are 4 tabs Source, Projects, Libraries, Order and Export

Go to

Libraries tab --> click on JRE System Library --> Then Remove it.

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Q. How to add JRE System Library to project?

Ans : Go to project then

Right click on project---> Build Path --> Configure build path

Now there are 4 tabs Source, Projects, Libraries, Order and Export

Go to

Libraries tab --> Click on Add Library (shown at the right side) --> select JRE System Library --> Next --> click Alternate JRE --> select Installed JRE--> Finish --> Apply--> OK.