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-rw-r--r--luni/src/main/java/java/util/EventObject.java2
1 files changed, 1 insertions, 1 deletions
diff --git a/luni/src/main/java/java/util/EventObject.java b/luni/src/main/java/java/util/EventObject.java
index 058e7e8..0fc92bb 100644
--- a/luni/src/main/java/java/util/EventObject.java
+++ b/luni/src/main/java/java/util/EventObject.java
@@ -41,7 +41,7 @@ public class EventObject implements Serializable {
*/
public EventObject(Object source) {
if (source == null) {
- throw new IllegalArgumentException();
+ throw new IllegalArgumentException("source == null");
}
this.source = source;
}