Eclipse-刚卸载了Java 1.7（我的机器上仍然有Java 1.6），但是现在Eclipse无法识别任何Java东西

Question

I'm extremely confused about how to set up Java on Eclipse. I don't get how classpath/system variables/etc all works. I set my Java compiler settings from 1.7 to 1.6 after I uninstalled 1.7 (I still have 1.6). But it's still not working. Any help?

Answer 1

Open Eclipse. Follow Project => Properties => Java Build Path .

Come onto Libraries tab and on the right hand side you will see some buttons, click Add Library .

Select JRE System Library and click "Next" button. By clicking on Installed JREs button you will see the JREs that your Eclipse recognizes. If the JRE version is not visible there, you can use "Add" button to add a new JRE, and make sure you set the path of new JRE correctly. Sample path on my machine: C:\\Program Files (x86)\\Java\\jre6

Answer 2

可能您必须设置类路径： http : //javarevisited.blogspot.com/2011/01/how-classpath-work-in-java.html ，或者您只有JRE（没有JDK）吗？