.class public SyncBox .super java/lang/Object .field private protected boxContents Ljava/lang/Object; .method public ()V .limit locals 1 .limit stack 1 aload_0 invokenonvirtual java/lang/Object/()V return .end method .method public synchronized get()Ljava/lang/Object; .limit locals 2 .limit stack 2 aload_0 getfield SyncBox/boxContents Ljava/lang/Object; astore_1 aload_0 aconst_null putfield SyncBox/boxContents Ljava/lang/Object; aload_1 areturn .end method .method public synchronized put(Ljava/lang/Object;)Z .limit locals 2 .limit stack 2 aload_0 getfield SyncBox/boxContents Ljava/lang/Object; aconst_null if_acmpeq stop_0 iconst_0 ireturn stop_0: aload_0 aload_1 putfield SyncBox/boxContents Ljava/lang/Object; iconst_1 ireturn .end method