Save map to file java

// Save map in file
Map<String, String> map = new HashMap<String, String>();
Properties properties = new Properties();

for (Map.Entry<String,String> entry : map.entrySet()) {
    properties.put(entry.getKey(), entry.getValue());
}

properties.store(new FileOutputStream("data.properties"), null);

// Load the map
Map<String, String> map_from_file = new HashMap<String, String>();
Properties properties = new Properties();
properties.load(new FileInputStream("data.properties"));

for (String key : properties.stringPropertyNames()) {
   map_from_file.put(key, properties.get(key).toString());
}

Source: stackoverflow.com

Similar codes

1 vote376 views1 answer
Java radnom
Java
-1 vote330 views1 answer
Annotation spring notnull
Java
0 vote322 views1 answer
What is the import for gogga class java
Java
5 votes322 views1 answer
Exit from jshell
Java
0 vote330 views1 answer
Why String is popular HashMap key in Java?
Java
5 votes308 views2 answers
How to replace an element in array in java
Java
1 vote331 views1 answer
Android hide system bar programmatically
Java
1 vote303 views1 answer
Java windowlistener close window
Java
10 votes325 views2 answers
Retrofit gradle
Java
4 votes353 views3 answers
Java get number of days in month
Java