040000 tree 54cbbf68213cf2c146794b35f49cab9f61e6189b	apple
040000 tree 050ec8e49bf10df49b98b67d822957b20859aeaf	java
040000 tree 3381854f45befc67bd152c83873447d8780b0cec	jdk
040000 tree 0224d2712bff2ec4dce6021db54e37c426057539	sun