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What does -Xlint compile error mean?

807601May 10 2008 — edited May 10 2008

I am new to Java.... I have an application and when I run the javac compiler I am getting the following error.

Note: InventoryFinal.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

So then I compiled using javac -Xlint and I get the following error

InventoryFinal.java:20: warning: [unchecked] unchecked conversion
found : java.util.ArrayList
required: java.util.ArrayList<Company>
al=new ArrayList();
^
1 warning

After I compile with the -Xlint switch the application runs as I expect it to. I am concerned about this message and would like to undestand how to fix the problem

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Locked on Jun 7 2008

Added on May 10 2008

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