jodd-core/src/main/java/jodd/io/FileUtil.java
private static void checkDirCopy(final File srcDir, final File destDir) throws IOException {
		checkExists(srcDir);
		checkIsDirectory(srcDir);
		if (equals(srcDir, destDir)) {
			throw new IOException("Source '" + srcDir + "' and destination '" + destDir + "' are equal");
		}
	}
private static void checkDirCopy(final File srcDir, final File destDir) throws IOException {
		checkExists(srcDir);
		checkIsDirectory(srcDir);
		if (equals(srcDir, destDir)) {
			throw new IOException("Source '" + srcDir + "' and destination '" + destDir + "' are equal");
		}
	}
private static void checkDirCopy ( final File srcDir , final File destDir ) throws IOException { checkExists ( srcDir ) ; checkIsDirectory ( srcDir ) ; if ( equals ( srcDir , destDir ) ) { throw new IOException ( "Source '" + srcDir + "' and destination '" + destDir + "' are equal" ) ; } }
Checks that srcDir exists, that it is a directory and if srcDir and destDir are not equal.

@param srcDir  Source directory
@param destDir Destination directory
@throws IOException if any of the above conditions are not true.
Checks that srcDir exists that it is a directory and if srcDir and destDir are not equal .