6 files changed, 6 insertions, 6 deletions
diff --git a/src/fjbg/ch/epfl/lamp/fjbg/JStackMapTableAttribute.java b/src/fjbg/ch/epfl/lamp/fjbg/JStackMapTableAttribute.java
index da7f00bf3e..52881a2502 100644
--- a/src/fjbg/ch/epfl/lamp/fjbg/JStackMapTableAttribute.java
+++ b/src/fjbg/ch/epfl/lamp/fjbg/JStackMapTableAttribute.java
@@ -144,7 +144,7 @@ public class JStackMapTableAttribute extends JAttribute {
             case 8: // ITEM_Uninitialized
                 return "<uninitialized>";
             default:
-                return ""+tag;
+                return String.valueOf(tag);
             }
         }
     }
diff --git a/src/fjbg/ch/epfl/lamp/fjbg/JType.java b/src/fjbg/ch/epfl/lamp/fjbg/JType.java
index 86649b07de..2519fc0fe1 100644
--- a/src/fjbg/ch/epfl/lamp/fjbg/JType.java
+++ b/src/fjbg/ch/epfl/lamp/fjbg/JType.java
@@ -310,7 +310,7 @@ abstract public class JType {
         case T_OBJECT  : return "Object";
         case T_UNKNOWN : return "<unknown>";
         case T_ADDRESS : return "<address>";
-        default:         return ""+tag;
+        default:         return String.valueOf(tag);
         }
     }
 }
diff --git a/src/library/scala/runtime/BooleanRef.java b/src/library/scala/runtime/BooleanRef.java
index bf43b470b4..dc87dd2343 100644
--- a/src/library/scala/runtime/BooleanRef.java
+++ b/src/library/scala/runtime/BooleanRef.java
@@ -16,5 +16,5 @@ public class BooleanRef implements java.io.Serializable {
 
     public boolean elem;
     public BooleanRef(boolean elem) { this.elem = elem; }
-    public String toString() { return "" + elem; }
+    public String toString() { return String.valueOf(elem); }
 }
diff --git a/src/library/scala/runtime/ObjectRef.java b/src/library/scala/runtime/ObjectRef.java
index a1567b6e48..a06fa53b08 100644
--- a/src/library/scala/runtime/ObjectRef.java
+++ b/src/library/scala/runtime/ObjectRef.java
@@ -16,5 +16,5 @@ public class ObjectRef implements java.io.Serializable {
 
     public Object elem;
     public ObjectRef(Object elem) { this.elem = elem; }
-    public String toString() { return "" + elem; }
+    public String toString() { return String.valueOf(elem); }
 }
diff --git a/src/library/scala/runtime/VolatileBooleanRef.java b/src/library/scala/runtime/VolatileBooleanRef.java
index 5cb308b0fd..ca1232157d 100755
--- a/src/library/scala/runtime/VolatileBooleanRef.java
+++ b/src/library/scala/runtime/VolatileBooleanRef.java
@@ -16,5 +16,5 @@ public class VolatileBooleanRef implements java.io.Serializable {
 
     volatile public boolean elem;
     public VolatileBooleanRef(boolean elem) { this.elem = elem; }
-    public String toString() { return "" + elem; }
+    public String toString() { return String.valueOf(elem); }
 }
diff --git a/src/library/scala/runtime/VolatileObjectRef.java b/src/library/scala/runtime/VolatileObjectRef.java
index 2549b58713..458567172e 100755
--- a/src/library/scala/runtime/VolatileObjectRef.java
+++ b/src/library/scala/runtime/VolatileObjectRef.java
@@ -16,5 +16,5 @@ public class VolatileObjectRef implements java.io.Serializable {
 
     volatile public Object elem;
     public VolatileObjectRef(Object elem) { this.elem = elem; }
-    public String toString() { return "" + elem; }
+    public String toString() { return String.valueOf(elem); }
 }