import java.io.RandomAccessFile;

public class FalsePositive {
    private boolean isHundredBytes = false;

    public void bar() throws Exception {
        RandomAccessFile file = null;
        try {
            file = new RandomAccessFile("name", "r");
            this.isHundredBytes = file.length() == 100;  /* violation here... */
        } finally {
            file.close();
        }
    }
}