多项选择题X 纠错
A.It is possible for more than two threads to deadlock at once.
B.The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
C.Deadlocked threads release once their sleep() method's sleep duration has expired.
D.Deadlocking can occur only when the wait(), notify(), and notifyAll() methods are used incorrectly.
E.It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
F.If a piece of code is capable of deadlocking, you cannot eliminate the possibility of deadlocking by inserting invocations of Thread.yield().
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单项选择题
A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "foo".
D.The code executes normally, but nothing is printed.
单项选择题
A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "sleep".
D.The code executes normally, but nothing is printed.
单项选择题
A.If line 10 is removed, the compilation succeeds.
B.If line 11 is removed, the compilation succeeds.
C.If line 12 is removed, the compilation succeeds.
D.If line 13 is removed, the compilation succeeds.
E.More than one line must be removed for compilation to succeed.
单项选择题
A.420 is the output.
B.An exception is thrown at runtime.
C.All constructors must be declared public.
D.Constructors CANNOT use the private modifier.
E.Constructors CANNOT use the protected modifier.
单项选择题
A.Looser coupling
B.Tighter coupling
C.Lower cohesion
D.Higher cohesion
E.Weaker encapsulation
F.Stronger encapsulation
多项选择题
A.super(name, baseSalary);
B.this.commission = commission;
C.super();this.commission = commission;
D.this.commission = commission;super();
E. super(name, baseSalary);this.commission = commission;
F.this.commission = commission;super(name, baseSalary);
G.super(name, baseSalary, commission);
多项选择题
A.public void m1() { }
B.protected void m1() { }
C.private void m1() { }
D.void m2() { }
E.public void m2() { }
F.protected void m2() { }
G.private void m2() { }
多项选择题
A.Inheritance
B.Low cohesion
C.Tight coupling
D.High cohesion
E.Loose coupling
F.Object immutability
单项选择题
A.class Man extends Dog { }
B.class Man implements Dog { }
C.class Man { private BestFriend dog; }
D.class Man { private Dog bestFriend; }
E.class Man { private Dog<bestFriend>; }
F.class Man { private BestFriend<dog>; }