adaptation of old eclipse code to Intellij

src/peers/sip/syntaxencoding/SipHeaders.java

@@ -24,19 +24,19 @@ import java.util.ArrayList;
 import peers.sip.RFC3261;
 
 
-
+@SuppressWarnings("unused")
 public class SipHeaders {
     
-    private ArrayList<SipHeader> headers;
+    private final ArrayList<SipHeader> headers;
     
     public SipHeaders() {
-        headers = new ArrayList<SipHeader>();
+        headers = new ArrayList<>();
     }
     
     /**
      * 
-     * @param name
-     * @param value
+     * @param name SipHeaderFieldName
+     * @param value SipHeaderFieldValue
      * @param index -1 to add at the end
      */
     public void add(SipHeaderFieldName name, SipHeaderFieldValue value, int index) {
@@ -49,7 +49,7 @@ public class SipHeaders {
                 SipHeaderFieldMultiValue oldMultiVal = (SipHeaderFieldMultiValue) oldValue;
                 oldMultiVal.getValues().add(value);
             } else {
-                ArrayList<SipHeaderFieldValue> arr = new ArrayList<SipHeaderFieldValue>();
+                ArrayList<SipHeaderFieldValue> arr = new ArrayList<>();
                 arr.add(oldValue);
                 arr.add(value);
                 header.setValue(new SipHeaderFieldMultiValue(arr));
@@ -90,7 +90,7 @@ public class SipHeaders {
 
     @Override
     public String toString() {
-        StringBuffer buf = new StringBuffer();
+        StringBuilder buf = new StringBuilder();
         for (SipHeader header : headers) {
             buf.append(header.getName().toString());
             buf.append(": ");