java 资源泄露问题

public boolean writeBlockComment(String theComment) {

rawData.add(BuildingBlock.comment+theComment);
return true;

}

/** Writes the buildingBlock data to a file.
* @param fileName File to write. Overwrites existing files.
* @return Returns true on success.
*/
public boolean writeBlockFile(String fileName) {

File file = new File(fileName);

if (file.exists()) {
if (!file.delete()) {

System.err.println("Unable to delete file...(so I could re-write it)"); //$NON-NLS-1$
return false;
}
}

try {

// file.createNewFile();

BufferedWriter out = new BufferedWriter(new FileWriter(file));

for (int c = 0; c < rawData.size(); c++) {