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.
相关考题
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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 -
单项选择题
public class Test { public static void main （String[]args） { String foo = args[1]； String bar = args[2]； String baz = args[3]； System.out.printIn（“baz = ” + baz）； } } And the output： Baz = 2 Which command line invocation will produce the output？（）
A. Java Test 2222
B. Java Test 1 2 3 4
C. Java Test 4 2 4 2
D. Java Test 4 3 2 1
