多项选择题
Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class?()
A. If the hashCode values are different, the objects might be equal.
B. If the hashCode values are the same, the object must be equal.
C. If the hashCode values are the same, the objects might be equal.
D. If the hashCode values are different, the objects must be unequal.
相关考题
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多项选择题
WhichtwoarereservedwordsintheJavaprogramminglanguage?()
A. run
B. import
C. default
D. implement -
单项选择题
11.publicstaticvoidmain(String[]args){ 12.Objectobj=newObject(){ 13.publicinthashCode(){ 14.returns42; 15.} 16.}; 17.System.out.println(obj.hashCode()); 18.} Whatistheresult?()
A. 42
B. An exception is thrown at runtime.
C. Compilation fails because of an error on line 12.
D. Compilation fails because of an error on line 16.
E. Compilation fails because of an error on line 17. -
单项选择题
Whichmethodmustbedefinedbyaclassimplementingthejava.lang.Runnableinterface?()
A. void run()
B. public void run()
C. public void start()
D. void run(int priority)
E. public void run(int priority)
F. public void start(int priority)
