Added a few methods

Signed-off-by: Ralph Niemitz <[email protected]>

src/de/ralleytn/simple/json/JSONArray.java

@@ -220,7 +220,7 @@
  * Represents a JSON array.
  * @author FangYidong([email protected])
  * @author Ralph Niemitz/RalleYTN([email protected])
- * @version 1.0.0
+ * @version 1.1.0
  * @since 1.0.0
  */
 public class JSONArray extends ArrayList<Object> implements JSONAware, JSONStreamAware {
@@ -1309,4 +1309,42 @@ public JSONArray[] toArrayArray() {
 
 		return array;
 	}
+
+	/**
+	 * @param rootName name of the root element
+	 * @return this JSON array as XML
+	 * @since 1.1.0
+	 */
+	public String toXML(String rootName) {
+
+		StringBuilder builder = new StringBuilder();
+		builder.append('<');
+		builder.append(rootName);
+		builder.append(" length=");
+		builder.append(this.size());
+		builder.append('>');
+
+		for(Object element : this) {
+
+				   if(element instanceof JSONObject) {builder.append(((JSONObject)element).toXML("item"));
+			} else if(element instanceof JSONArray) {builder.append(((JSONArray)element).toXML("item"));
+			} else {
+
+				builder.append("<item>");
+
+				if(element != null) {
+
+					builder.append(String.valueOf(element));
+				}
+
+				builder.append("</item>");
+			}
+		}
+
+		builder.append("</");
+		builder.append(rootName);
+		builder.append('>');
+
+		return builder.toString();
+	}
 }

src/de/ralleytn/simple/json/JSONFormatter.java

@@ -213,7 +213,7 @@
  * @version 1.0.0
  * @since 1.0.0
  */
-public final class JSONFormatter {
+public class JSONFormatter {
 
 	private JSONFormatter() {}
 

src/de/ralleytn/simple/json/JSONObject.java

@@ -218,7 +218,7 @@
  * Represents a JSON object.
  * @author FangYidong([email protected])
  * @author Ralph Niemitz/RalleYTN([email protected])
- * @version 1.0.0
+ * @version 1.1.0
  * @since 1.0.0
  */
 public class JSONObject extends LinkedHashMap<Object, Object> implements JSONAware, JSONStreamAware {
@@ -335,6 +335,25 @@ public static final String toJSONString(Map<?, ?> map) {
 		}
 	}
 
+	/**
+	 * @return a new {@linkplain JSONObject} without any {@code null} values
+	 * @since 1.1.0
+	 */
+	public JSONObject compact() {
+
+		JSONObject object = new JSONObject();
+
+		this.forEach((key, value) -> {
+
+			if(value != null) {
+
+				object.put(key, value);
+			}
+		});
+
+		return object;
+	}
+
 	@Override
 	public String toJSONString() {
 
@@ -519,4 +538,45 @@ public <T extends Enum>T getEnum(String key, Class<T> type) {
 
 		return JSONValue.getEnum(this.get(key), type);
 	}
+
+	/**
+	 * @param rootName the name of the root element
+	 * @return this JSON Object in XML
+	 * @since 1.1.0
+	 */
+	public String toXML(String rootName) {
+
+		StringBuilder builder = new StringBuilder();
+
+		builder.append('<');
+		builder.append(rootName);
+		builder.append('>');
+
+		this.forEach((key, value) -> {
+
+			       if(value instanceof JSONObject) {builder.append(((JSONObject)value).toXML(key.toString()));
+			} else if(value instanceof JSONArray)  {builder.append(((JSONArray)value).toXML(key.toString()));
+			} else {
+
+				builder.append('<');
+				builder.append(key);
+				builder.append('>');
+
+				if(value != null) {
+
+					builder.append(String.valueOf(value));
+				}
+
+				builder.append("</");
+				builder.append(key);
+				builder.append('>');
+			}
+		});
+
+		builder.append("</");
+		builder.append(rootName);
+		builder.append('>');
+
+		return builder.toString();
+	}
 }