Given: What is the result?()
A.Compilation fails. B.Cannot add Toppings C.The code runs with no output. D.A NullPointerException is thrown in Line 4.
单项选择题A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion, they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself. What design issue has the team discovered?()
A.Tight coupling B.Low cohesion C.High cohesion D.Loose coupling E.Weak encapsulation F.Strong encapsulation
多项选择题Given: Which two code fragments, inserted independently at line 13, will compile?()
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;
多项选择题Given: What are four valid examples of polymorphic method calls?()
A.x.a2(); B.z.a2(); C.z.c1(); D.z.a1(); E.y.c1(); F.x.a1();
单项选择题Given: What is the result?()
A.peep B.bark C.meow D.Compilation fails. E.An exception is thrown at runtime.
单项选择题Given: Which change can you make to Target without affecting Client?()
A.Line 4 of class Target can be changed to return i++; B.Line 2 of class Target can be changed to private int i = 1; C.Line 3 of class Target can be changed to private int addOne(){ D.Line 2 of class Target can be changed to private Integer i = 0;