diff --git a/classpath/java/lang/ArrayIndexOutOfBoundsException.java b/classpath/java/lang/ArrayIndexOutOfBoundsException.java
index 1478a62a2e..3ba5fccdec 100644
--- a/classpath/java/lang/ArrayIndexOutOfBoundsException.java
+++ b/classpath/java/lang/ArrayIndexOutOfBoundsException.java
@@ -23,6 +23,10 @@ public class ArrayIndexOutOfBoundsException extends IndexOutOfBoundsException {
     this(null, cause);
   }
 
+  public ArrayIndexOutOfBoundsException(int idx) {
+    this("Array index out of range: " + idx);
+  }
+
   public ArrayIndexOutOfBoundsException() {
     this(null, null);
   }
diff --git a/classpath/java/lang/ClassNotFoundException.java b/classpath/java/lang/ClassNotFoundException.java
index 86e6b82c8c..361525b917 100644
--- a/classpath/java/lang/ClassNotFoundException.java
+++ b/classpath/java/lang/ClassNotFoundException.java
@@ -25,4 +25,9 @@ public class ClassNotFoundException extends Exception {
   public ClassNotFoundException() {
     this(null, null);
   }
+  
+  public Throwable getException() {
+    return cause2;
+  }
+  
 }