Allow filtering Java test cases.

core/java/algorithm/src/main/java/com/lyndir/masterpassword/MPAlgorithm.java

@@ -18,6 +18,8 @@
 
 package com.lyndir.masterpassword;
 
+import static com.lyndir.lhunath.opal.system.util.StringUtils.strf;
+
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import com.google.common.primitives.UnsignedInteger;
@@ -190,6 +192,12 @@ public abstract class MPAlgorithm {
 
     protected abstract byte[] toID(byte[] bytes);
 
+    @Override
+    public String toString() {
+        
+        return strf( "%d, %s", version().toInt(), getClass().getSimpleName() );
+    }
+
     /**
      * The algorithm iterations.
      */