Given the following six method names：
add Listener
add Mouse Listener
set Mouse Listener
delete Mouse Listener
remove Mouse Listener
register Mouse Listener
How many of these method names follow JavaBean Listener naming rules？（）
A.1
B.2
C.3
D.4
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Given：
What is the result？（）
A.Mr. John Doe
B.An exception is thrown at runtime.
C.Compilation fails because of an error in line 12.
D.Compilation fails because of an error in line 15.
E.Compilation fails because of an error in line 20.
Given：
Which code， inserted at line 15， allows the class Sprite to compile？（）
A.Foo { public int bar（） { return 1； }
B.new Foo { public int bar（） { return 1； }
C.new Foo（） { public int bar（） { return 1； }
D.new class Foo { public int bar（） { return 1； }
Click the Exhibit button.
Given： ClassA a = new ClassA（）；a.methodA（）；
What is the result？（）
A.Compilation fails.
B.ClassC is displayed.
C.The code runs with no output.
D.An exception is thrown at runtime.
Given：
35.String #name = "Jane Doe"；
36.int $age = 24；
37.Double _height = 123.5；
38.double ~temp = 37.5；
Which two statements are true？（）
A.Line 35 will not compile.
B.Line 36 will not compile.
C.Line 37 will not compile.
D.Line 38 will not compile.
Given：
What is the result？（）
A.An exception is thrown at runtime.
B.Compilation fails because of an error in line 7.
C.Compilation fails because of an error in line 4.
D.Compilation succeeds and no runtime errors with class A occur.
Given：
What is the result？（）
A.13
B.134
C.1234
D.2134
Given：
Which two methods， inserted independently at line 17， correctly complete the Sales class？（）
A.double getSalesAmount（） { return 1230.45； }
B.public double getSalesAmount（） { return 1230.45； }
C.private double getSalesAmount（） { return 1230.45； }
D.protected double getSalesAmount（） { return 1230.45； }
Given：
Which three methods， inserted individually at line 14， will correctly complete class Two？（）
A.int foo（） { /* more code here */ }
B.void foo（） { /* more code here */ }
C.public void foo（） { /* more code here */ }
D.private void foo（） { /* more code here */ }
E.protected void foo（） { /* more code here */ }
Given：
What is the result？（）
A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "bar".
D.The code executes normally， but nothing prints.
Given：
What is the result？（）
A.Cat
B.Dog
C.Compilation fails.
D.The code runs with no output.
E.An exception is thrown at runtime.
最新试题
Given：What is the result？（）
Given a method that must ensure that its parameter is not null：What， inserted at line 12， is the appropriate way to handle a null value？（）
Given：What is the result？（）
Given：What is the result？（）
Click the Exhibit buttonWhich two statements are true if a NullPointerException is thrown on line 3 of class C？（）
Click the Exhibit button.Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM？（）
Given：What is the result？（）
A programmer has an algorithm that requires a java.util.List that provides an efficient implementation of add（0， object）， but does NOT need to support quick random access.What supports these requirements？（）
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？（）
Given：What is the result？（）