单项选择题
String foo = “blue”；
Boolean[]bar = new Boolean [1]；
if （bar[0]） {
foo = “green”；
}
What is the result？ （）
A. Foo has the value of “”
B. Foo has the value of null.
C. Foo has the value of “blue”
D. Foo has the value of “green”
E. An exception is thrown.
F. The code will not compile.
相关考题
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多项选择题
Whichtwovaliddeclarationsofachar？（）
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； -
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；
