Test类中合法的构造方法是().
A. test(){}
B. Test(){}
C. voidTest(){}
D. privatefinalTest(){}
哪个表达式的结果为0.5()?
A. 1/2
B. (double)(1/2)
C. (double)1/2
D. 1\2
下面哪个类包含方法,能够检查一个文件是否存在?().
A. File
B. PrintWriter
C. Scanner
D. System
下面哪个方法不是publicvoidexample(){...}的重载方法().
A. publicvoidexample(intm){...}
B. publicintexample(){...}
C. publicvoidexample(floatf){...}
D. publicintexample(intm,floatf){...}