多项选择题
Which two valid declarations of a char？（）
A. Char ch = “a”；
B. Char ch = ‘\’ ‘；
C. Char ch = ‘cafe’；
D. Char ch = “cafe”；
E. Char ch = ‘\ucafe’；
F. Char ch = ‘\u10100’；
G. Char ch = （char） true；
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相关考题
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单项选择题
public class foo { static String s； public static void main （String[]args） { system.out.printIn （“s=” + s）； } } What is the result？（）
A. The code compiles and “s=” is printed.
B. The code compiles and “s=null” is printed.
C. The code does not compile because string s is not initialized.
D. The code does not compile because string s cannot be referenced.
E. The code compiles， but a NullPointerException is thrown when toString is called. -
多项选择题
public interface Foo{ int k = 4； } Which three are equivalent to line 2？（）
A. Final int k = 4；
B. Public int k = 4；
C. Static int k = 4；
D. Private int k = 4；
E. Abstract int k = 4；
F. Volatile int k = 4； -
单项选择题
int index = 1； String [] test = new String[3]； String foo = test[index]； What is the result？（）
A. Foo has the value “”
B. Foo has the value null
C. An exception is thrown
D. The code will not compile
