Compiling in JRE with Eclipse

Question

I have two questions regarding compiling a project in Eclipse for a specific JRE:

1) Project Properties Window Java build path Libraries Tab:

If I want to compile JRE 6 - Should the window show JRE 6 as well as JRE 7 as indicated in the build path? Or is it enough just JRE 6?

Is my current situation good or bad?

2) I know the steps for designing a specific JRE:

a - Verify that the JRE is in the installed list of JREs in Eclipse.

b - Add it to the project build path by clicking "Add Library" in the window that appears.

c - , JRE. , (JRE ).

, : JRE Java JRE, ?

Answer 1

- , .

Java classpath.

build , .

Configure Build Path .classpath. .

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