Can not get a Wallet by DeterministicKey if the DeterministicKey is over one depth

[waitLin]

My code like this

NetworkParameters parameters = TestNet3Params.get();
String seedCode = "fee scan inform crash three lab wish actress mule defense donkey arctic";
String passphrase = "";
Long creationTime = 1492061814L;
DeterministicSeed seed = new DeterministicSeed(seedCode, null, passphrase, creationTime);
DeterministicKey masterPriKey = HDKeyDerivation.createMasterPrivateKey(seed.getSeedBytes());
DeterministicKey purposePriKey = HDKeyDerivation.deriveChildKey(masterPriKey, ChildNumber.ZERO_HARDENED);
DeterministicKey coinTypePriKey = HDKeyDerivation.deriveChildKey(purposePriKey, new ChildNumber(1, true));
Wallet childWallet = Wallet.fromWatchingKey(parameters, coinTypePriKey.dropParent().dropPrivateBytes());
Address address = childWallet.currentReceiveAddress();
System.out.println(address);

And I get a Execption

Exception in thread "main" java.lang.IllegalArgumentException: No key found for absolute path M/0H.
	at org.bitcoinj.crypto.DeterministicHierarchy.get(DeterministicHierarchy.java:89)
	at org.bitcoinj.crypto.DeterministicHierarchy.deriveChild(DeterministicHierarchy.java:147)
	at org.bitcoinj.wallet.DeterministicKeyChain.initializeHierarchyUnencrypted(DeterministicKeyChain.java:439)
	at org.bitcoinj.wallet.DeterministicKeyChain.<init>(DeterministicKeyChain.java:326)
	at org.bitcoinj.wallet.DeterministicKeyChain.watch(DeterministicKeyChain.java:352)
	at org.bitcoinj.wallet.KeyChainGroup.<init>(KeyChainGroup.java:92)
	at org.bitcoinj.wallet.Wallet.fromWatchingKey(Wallet.java:281)
	at org.bitcoinj.examples.ColdWallet.main(ColdWallet.java:66)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

I think that is true in the error place, the keys.containsKey(absolutePath) should be true. But it false and throw the Exception. Who can tell me why ? Tx.

[waitLin]

What does it mean ? @daymo131308

[qyvlik]

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