Java how to iterate over JSONObject

To iterate over the key-value pairs of a JSONObject in Java, you can use the keys method to get an iterator over the keys of the object, and then use the get method to get the value for each key.

Here is an example of how you can iterate over the key-value pairs of a JSONObject and print them:

JSONObject object = new JSONObject("{\"key1\": \"value1\", \"key2\": \"value2\", \"key3\": \"value3\"}");

Iterator<String> iterator = object.keys();
while (iterator.hasNext()) {
    String key = iterator.next();
    String value = object.getString(key);
    System.out.println(key + ": " + value);
}

This will print the key-value pairs of the JSONObject in the order they were added.

Keep in mind that the JSONObject class is not thread-safe, so if multiple threads are accessing the object concurrently, you will need to synchronize access to the object to prevent race conditions.

You can also use the for-each loop or the for loop to iterate over the key-value pairs of a JSONObject. Here is an example using the for-each loop:

JSONObject object = new JSONObject("{\"key1\": \"value1\", \"key2\": \"value2\", \"key3\": \"value3\"}");

for (String key : object.keySet()) {
    String value = object.getString(key);
    System.out.println(key + ": " + value);
}

And here is an example using the for loop:

JSONObject object = new JSONObject("{\"key1\": \"value1\", \"key2\": \"value2\", \"key3\": \"value3\"}");

String[] keys = object.keySet().toArray(new String[0]);
for (int i = 0; i < keys.length; i++) {
    String key = keys[i];
    String value = object.getString(key);
    System.out.println(key + ": " + value);
}