Bug 231260

Summary:	Compiler compliance level 5.0 and String isEmpty();
Product:	[Eclipse Project] JDT	Reporter:	Jean-Luc Geering <jgeering>
Component:	Core	Assignee:	Jerome Lanneluc <jerome_lanneluc>
Status:	VERIFIED INVALID	QA Contact:
Severity:	normal
Priority:	P3	CC:	david_audel, Mark.Swanson, njbartlett, Olivier_Thomann, remy.suen
Version:	3.3.2
Target Milestone:	3.5 M4
Hardware:	PC
OS:	Linux
Whiteboard:

Description Jean-Luc Geering

2008-05-09 04:02:27 EDT

With the java compiler compliance level set to 5.0, Eclipse doesn't complain when I use java.lang.String.isEmpty(), which is only available in java 6.

Comment 1 Remy Suen

2008-05-09 08:17:22 EDT

I don't think there is any way for the compiler to know that a method was added in Java 5 or Java 6.

Comment 2 Olivier Thomann

2008-05-09 08:36:09 EDT

The compiler is using the libraries that you set up on the classpath.
So if you are setting the compliance to 1.5, you should use 1.5 libraries.

The @since information is not stored in the .class files, so there is no way for the compiler to retrieve this information from the binaries themselves.

Comment 3 Neil Bartlett

2008-05-09 08:38:53 EDT

Like the -source flag in javac, the compiler compliance level dictates only which Java language features are used. It has no effect on available APIs.

Comment 4 Jerome Lanneluc

2008-10-31 06:18:09 EDT

Closing as INVALID since the described problem is not a bug

Comment 5 Jerome Lanneluc

2008-10-31 06:19:35 EDT

*** Bug 252220 has been marked as a duplicate of this bug. ***

Comment 6 David Audel

2008-12-09 04:42:41 EST

Verified for 3.5M4