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org.springframework.core.io Documentation Differences

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Class AbstractResource, long contentLength()

This implementation reads the entire InputStream to calculate the content length. Subclasses will almost always be able to provide a more optimal version of this, e.g. checking a File length. @see #getInputStream() @throws IllegalStateException if .getInputStream() returns null.

Class VfsResource

VFS based Resource implementation. Supports the corresponding VFS API versions on JBoss AS 5.x as well as 6.x and 7.x. @author Ales Justin @author Juergen Hoeller @author Costin Leau @since 3.0 @see org.jboss.virtual.VirtualFile @see org.jboss.vfs.VirtualFile