多项选择题
Which statements about Java code security are true？（）
A. The bytecode verifier loads all classes needed for the execution of a program.
B. Executing code is performed by the runtime interpreter.
C. At runtime the bytecodes are loaded， checked and run in an interpreter.
D. The class loader adds security by separating the namespaces for the classes of the local file system from those imported from network sources.
相关考题
-
单项选择题
Given the following code fragment： 1） String str = null； 2） if （（str != null） && （str.length（） > 10）） { 3） System.out.println（"more than 10"）； 4） } 5） else if （（str != null） & （str.length（） < 5）） { 6） System.out.println（"less than 5"）； 7） } 8） else { System.out.println（"end"）； } Which line will cause error？（）
A. line 1
B. line 2
C. line 5
D. line 8 -
单项选择题
Aclassdesignrequiresthatamembervariablecannotbeaccessibledirectlyoutsidetheclass.Whichmodifiershouldbeusedtoobtaintheaccesscontrol？（）
A. public
B. no modifier
C. protected
D. private -
多项选择题
Whichofthefollowingstatementsaboutvariablesandscopearetrue？（）
A. Local variables defined inside a method are destroyed when the method is exited.
B. Local variables are also called automatic variables.
C. Variables defined outside a method are created when the object is constructed.
D. A method parameter variable continues to exist for as long as the object is needed in which the method is defined.
