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public class Key {  private long id1;  private long 1d2;  // class Key methods  }  A programmer is developing a class Key, that will be used as a key in a standard java.util.HashMap. Which two methods should be overridden to assure that Key works correctly as a key?()
A

public int hashCode()

B

public boolean equals(Key k)

C

public int compareTo(Object o)

D

public boolean equals(Object o)

E

public boolean compareTo(Key k)


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更多 “多选题public class Key {  private long id1;  private long 1d2;  // class Key methods  }  A programmer is developing a class Key, that will be used as a key in a standard java.util.HashMap. Which two methods should be overridden to assure that Key works correctly as a key?()Apublic int hashCode()Bpublic boolean equals(Key k)Cpublic int compareTo(Object o)Dpublic boolean equals(Object o)Epublic boolean compareTo(Key k)” 相关考题
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考题 多选题Which two statements about the Diffie-Hellman (DH) key exchange process are correct? ()(Choose two.)AIn the DH key exchange process, the session key is never passed across the network.BIn the DH key exchange process, the public and private keys are mathematically related using the DH algorithm.CIn the DH key exchange process, the session key is passed across the network to the peer for confirmation.DIn the DH key exchange process, the public and private keys are not mathematically related, ensuring higher security

考题 多选题Which three statements are true?()AA final method in class X can be abstract if and only if X is abstract.BA protected method in class X can be overridden by any subclass of X.CA private static method can be called only within other static methods in class X.DA non-static public final method in class X can be overridden in any subclass of X.EA public static method in class X can be called by a subclass of X without explicitly referencing the class X.FA method with the same signature as a private final method in class X can be implemented in a subclass of X.GA protected method in class X can be overridden by a subclass of X only if the subclass is in the same package as X.

考题 多选题Which two statements regarding symmetric key encryption are true?() (Choose two.)AThe same key is used for encryption and decryption.BIt is commonly used to create digital certificate signatures.CIt uses two keys: one for encryption and a different key for decryption.DAn attacker can decrypt data if the attacker captures the key used for encryption.