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单选题
public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?()
A

 foofoofoofoofoo

B

 foobarfoobarbar

C

 foobarfoofoofoo

D

 foobarfoobarfoo

E

 barbarbarbarbar

F

 foofoofoobarbar

G

 foofoofoobarfoo


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更多 “单选题public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?()A  foofoofoofoofooB  foobarfoobarbarC  foobarfoofoofooD  foobarfoobarfooE  barbarbarbarbarF  foofoofoobarbarG  foofoofoobarfoo” 相关考题
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考题 单选题public class Test {  public static void main(String args[]) {  class Foo {  public int i = 3; }  Object o = (Object)new Foo();   Foo foo = (Foo)o;  System.out.println(“i = “ + foo.i); }  }  What is the result?()A  i = 3B  Compilation fails.C  A ClassCastException is thrown at line 6.D  A ClassCastException is thrown at line 7.

考题 多选题public class Foo {   private int val;   public foo(int v) (val = v;) }   public static void main (String args) {   Foo a = new Foo (10);   Foo b = new Foo (10);   Foo c = a;   int d = 10;   double e = 10.0;   }   Which three logical expression evaluate to true? ()A(a ==c)B(d ==e)C(b ==d)D(a ==b)E(b ==c)F(d ==10.0)

考题 单选题public class Foo {   public static void main (String []args) {   int i = 1;   int j = i++;   if ((i++j)  (i++ ==j))  {           i +=j;          }        }      }   What is the final value of i?()A  1B  2C  3D  4E  5

考题 单选题public class Delta {  static boolean foo(char c) {  System.out.print(c);  return true;  }  public static void main( String[] argv ) {  int i =0;  for ( foo(‘A’); foo(‘B’)(i2); foo(‘C’)){  i++ ;  foo(‘D’);  }  }  }  What is the result?()A  ABDCBDCBB  ABCDABCDC  Compilation fails.D  An exception is thrown at runtime.

考题 单选题1.public class Test {  2.public static void main (String args[]) {  3.class Foo {  4.public int i = 3;  5.}  6.Object o = (Object) new Foo();  7.Foo foo = (Foo)o;  8.System.out.printIn(foo. i); 9. }  10.}   What is the result?()A  Compilation will fail.B  Compilation will succeed and the program will print “3”C  Compilation will succeed but the program will throw a ClassCastException at line 6.D  Compilation will succeed but the program will throw a ClassCastException at line 7.

考题 单选题public class Foo {  static int[] a;  static { a[0]=2; }  public static void main( String[] args) {}  }  Which exception or error will be thrown when a programmer attempts to run this code?()A  java.lang. StackOverflowErrorB  java.lang.IllegalStateExceptionC  java.lang.ExceptionlnlnitializerErrorD  java.lang.ArraylndexOutOfBoundsException