erik/JSON-java
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Merge pull request #421 from strkkk/add-emptiness-methods

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add isEmpty and isNotEmpty methods
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Sean Leary 2018-05-26 09:56:23 -05:00 • committed by GitHub
commit 7a17ae0b3e
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2 changed files with 24 additions and 6 deletions
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12
JSONArray.java
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@ -1352,7 +1352,7 @@ public class JSONArray implements Iterable<Object> {
* If any of the names are null.
*/
public JSONObject toJSONObject(JSONArray names) throws JSONException {
if (names == null || names.length() == 0 || this.length() == 0) {
if (names == null || names.isEmpty() || this.isEmpty()) {
return null;
}
JSONObject jo = new JSONObject(names.length());
@ -1528,4 +1528,14 @@ public class JSONArray implements Iterable<Object> {
}
return results;
}
/**
* Check if JSONArray is empty.
*
* @return true if JSONArray is empty, otherwise false.
*/
public boolean isEmpty() {
return myArrayList.isEmpty();
}
}

18
JSONObject.java
View file

@ -810,11 +810,10 @@ public class JSONObject {
* @return An array of field names, or null if there are no names.
*/
public static String[] getNames(JSONObject jo) {
int length = jo.length();
if (length == 0) {
if (jo.isEmpty()) {
return null;
}
return jo.keySet().toArray(new String[length]);
return jo.keySet().toArray(new String[jo.length()]);
}
/**
@ -963,6 +962,15 @@ public class JSONObject {
return this.map.size();
}
/**
* Check if JSONObject is empty.
*
* @return true if JSONObject is empty, otherwise false.
*/
public boolean isEmpty() {
return map.isEmpty();
}
/**
* Produce a JSONArray containing the names of the elements of this
* JSONObject.
@ -1948,7 +1956,7 @@ public class JSONObject {
}
public static Writer quote(String string, Writer w) throws IOException {
if (string == null || string.length() == 0) {
if (string == null || string.isEmpty()) {
w.write("\"\"");
return w;
}
@ -2227,7 +2235,7 @@ public class JSONObject {
* If any of the values are non-finite numbers.
*/
public JSONArray toJSONArray(JSONArray names) throws JSONException {
if (names == null || names.length() == 0) {
if (names == null || names.isEmpty()) {
return null;
}
JSONArray ja = new JSONArray();