All Languages >> Java >> java code to compare csv file against a table

“java code to compare csv file against a table” Code Answer

java code to compare csv file against a table

java by Hungry Herring on Jul 16 2020 Donate

HashMap<String, String> f1 = new HashMap<String, String>();
HashMap<String, String> f2 = new HashMap<String, String>();
// read f1, f2; use PK field as the key
List<String> deleted = new ArrayList<String>();
List<String> updated = new ArrayList<String>();
for(Map.Entry<String, String> entry : f1.keySet()) {
    if(!f2.containsKey(entry.getKey()) {
        deleted.add(entry.getValue());
    } else {
        if(!f2.get(entry.getKey().equals(f1.getValue())) {
            updated.add(f1.getValue());
        }
    }
}
for(String key : f1.keySet()) {
    f2.remove(key);
}
// f2 now contains only "new" rows

Source: stackoverflow.com

Java queries related to “java code to compare csv file against a table”

Learn how Grepper helps you improve as a Developer!

INSTALL GREPPER FOR CHROME

“java code to compare csv file against a table” Code Answer

Java queries related to “java code to compare csv file against a table”

Learn how Grepper helps you improve as a Developer!

All Java Answers

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.