Changeset 6578 in josm for trunk/src/org/openstreetmap/josm/tools/Utils.java

Timestamp:

2013-12-31T13:04:42+01:00 (10 years ago)

Author:

bastiK

Message:

Preferences rework. Merges the 4 maps for the 4 setting
types into a single map. The code for the get...() and set...()
methods is also unified.
Additional consistency checks.

File:

• trunk/src/org/openstreetmap/josm/tools/Utils.java (modified) (1 diff)

trunk/src/org/openstreetmap/josm/tools/Utils.java

@@ -857 +857 @@
         }
     }
+
+    /**
+     * Cast an object savely.
+     * @param <T> the target type
+     * @param o the object to cast
+     * @param klass the target class (same as T)
+     * @return null if <code>o</code> is null or the type <code>o</code> is not
+     *  a subclass of <code>klass</code>. The casted value otherwise.
+     */
+    public static <T> T cast(Object o, Class<T> klass) {
+        if (klass.isInstance(o)) {
+            @SuppressWarnings("unchecked")
+            T ret = (T) o;
+            return ret;
+        }
+        return null;
+    }
+
 }