Given：
11.String test = "a1b2c3"；
12.String[] tokens = test.split（"\\d"）；
13.for（String s： tokens） System.out.print（s + " "）；
What is the result？（）
A.a b c
B.1 2 3
C.a1b2c3
D.a1 b2 c3
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A.String s = c.readLine（）；
B.char[] c = c.readLine（）；
C.String s = c.readConsole（）；
D.char[] c = c.readConsole（）；
E.String s = c.readLine（"%s"， "name "）；
Given：
12.String csv = "Sue，5，true，3"；
13.Scanner scanner = new Scanner（ csv ）；
14.scanner.useDelimiter（"，"）；15. int age = scanner.nextInt（）；
What is the result？（）
A.Compilation fails.
B.After line 15， the value of age is 5.
C.After line 15， the value of age is 3.
D.An exception is thrown at runtime.
A.Objects from classes that use aggregation cannot be serialized.
B.An object serialized on one JVM can be successfully deserialized on a different JVM.
C.The values in fields with the volatile modifier will NOT survive serialization and deserialization.
D.The values in fields with the transient modifier will NOT survive serialization and deserialization.
E.It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable.
Given：
Which two statements are true about the result if the default locale is Locale.US？（）
A.The value of b is 2.
B.The value of a is 3.14.
C.The value of b is 2.00.
D.The value of a is 3.141.
E.The value of a is 3.1415.
F.The value of a is 3.1416.
Given that the current directory is empty， and that the user has read and write privileges to the currentdirectory， and the following：
Which statement is true？（）
A.Compilation fails.
B.Nothing is added to the file system.
C.Only a new file is created on the file system.
D.Only a new directory is created on the file system.
E.Both a new file and a new directory are created on the file system.
Given：
Which statement is true？（）
A.Compilation fails.
B.An exception is thrown at runtime.
C.Synchronizing the run（） method would make the class thread-safe.
D.The data in variable "x" are protected from concurrent access problems.
E.Declaring the doThings（） method as static would make the class thread-safe.
Given
Which two statements are true？（）
A.Foo.beta（） is a valid invocation of beta（）.
B.Foo.alpha（） is a valid invocation of alpha（）.
C.Method beta（） can directly call method alpha（）.
D.Method alpha（） can directly call method beta（）.
Given：
And MainClass exists in the /apps/com/company/application directory.
Assume the CLASSPATH environment variable is set to "." （current directory）.
Which two java commands entered at the command line will run MainClass？（）
A.java MainClass if run from the /apps directory
B.java com.company.application.MainClass if run from the /apps directory
C.java -classpath /apps com.company.application.MainClass if run from any directory
D.java -classpath . MainClass if run from the /apps/com/company/application directory
E.java -classpath /apps/com/company/application：. MainClass if run from the /apps directory
Given：
What is the result？（）
A.w-f
B.f-p w-f
C.w-f b-f
D.f-p w-f b-f
Click the Exhibit button.
What is the output of the program shown in the exhibit？（）
A.300-100-100-100-100
B.300-300-100-100-100
C.300-300-300-100-100
D.300-300-300-300-100
最新试题
Given：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 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？（）
Click the Exhibit button.Which statement is true about the set variable on line 12？（）
Given：Which command-line invocations will compile？（）
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？（）
Given：What is the result？（）
Given：Which two code fragments， inserted independently at line 13， will compile？（）
Given：What is the result？（）
Given：Which code fragment， inserted at the end of line 12， produces the output p is 420？（）