Eclipse import project problems

There is only one main class in the eclipse source file package, but the main class cannot run variables that reference other classes in eclipse.

Problem:

Exception in thread "Main" Java. Lang. Error: compilation issues that cannot be parsed:
The arraylist type is not generic. Parameter <integer> cannot be used to parameterize it.
Syntax error. The parameterized type is available only when the source level is 5.0.
The arraylist type is not generic. Parameter <integer> cannot be used to parameterize it.
Syntax error. The parameterized type is available only when the source level is 5.0.

At puzzlepad. setisdigitplay (puzzlepad. Java: 99)
At puzzlegame. <init> (puzzlegame. Java: 48)
At puzzlegame. Main (puzzlegame. Java: 106)

Help solve it .....

Compiling and running in cmd cannot be run through eclipse

 

Solution:

 

Set Java compiler consistency level above 5.0 in preferences

 

 

In addition, if there is no compiler, only one editor, it means that the computer does not install the JRE environment,: http://java.sun.com/javase/downloads/index.jsp

 

Jre1.6 for the lazy: http://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/VerifyItem-Start/jre-6u14-windows-i586.exe? Bundledlineitemuuid = ib1ibe. prooaaaeifw4hlmc4 & orderid = ww1ibe. pilaaaaeicg4hlmc4 & productid = jwbibe. poo4aaaehlfup5zfr & filename =/jre-6u14-windows-i586.exe