String foo = “blue”; Booleanbar = new Boolean [1]; if (bar[0]) { foo = “green”; } What is the result?()
第1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?()
第2题:
3. string foo = “ABCDE”; 4. foo.substring(3); 5. foo.concat(“XYZ”); 6. Type the value of foo at line 6.()
第3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’)&&(i<2); foo(‘C’)){ i++ ; foo(‘D’); } } } What is the result?()
第4题:
Given the JSP code: <% request.setAttribute("foo", "bar"); %>and the Classic tag handler code: 5. public int doStartTag() throws JspException { 6. // insert code here 7. // return int 8. } Assume there are no other "foo" attributes in the web application. Which invocation on the pageContextobject,inserted at line 6,assigns "bar" to the variable x?()
第5题:
int index = 1; String [] test = new String[3]; String foo = test[index]; What is the result?()
第6题:
String value = getServletConfig( ).getParameter(“foo”);
String value = getServletContext( ).getAttribute(“foo”);
Object value = getServletContext( ).getInitParameter(“foo”);
String value = getServletContext( ).getInitParameter(“foo”)
第7题:
Foo has the value of “”
Foo has the value of null.
Foo has the value of “blue”
Foo has the value of “green”
An exception is thrown.
The code will not compile.
第8题:
Foo has the value of “”
Foo has the value of null.
Foo has the value of “blue”
Foo has the value of “green”
An exception is thrown.
The code will not compile.
第9题:
第10题:
ABDCBDCB
ABCDABCD
Compilation fails.
An exception is thrown at runtime.
第11题:
Foo has the value “”
Foo has the value null
An exception is thrown
The code will not compile
第12题:
String x = (String) pageContext.getAttribute(foo)
String x = (String) pageContext.getRequestScope(foo)
It is NOT possible to access the pageContext object from within doStartTag
String x = (String) pageContext.getRequest().getAttribute(foo)
String x = (String) pageContext.getAttribute(foo, PageContext.ANY_SCOPE)
第13题:
int index = 1; String test = new String; String foo = test[index]; What is the result?()
第14题:
5. String foo = “base”; 6. foo.substring(0,3); 7. foo.concat(“ket”) 8. Type the value of foo at line 8.()
第15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?()
第16题:
public class test( public static void main(stringargs){ string foo = args [1]; string foo = args ; string foo = args ; } ) And command line invocation: Java Test red green blue What is the result? ()
第17题:
Baz has the value of “”
Baz has the value of null
Baz has the value of “red”
Baz has the value of “blue”
Bax has the value of “green”
The program throws an exception.
第18题:
Baz has the value of “”
Baz has the value of null
Baz has the value of “red”
Baz has the value of “blue”
Bax has the value of “green”
The program throws an exception.
第19题:
第20题:
An exception is thrown.
The code will not compile.
The program prints “null”
The program prints “blue”
The program prints “green”
第21题:
(a ==c)
(d ==e)
(b ==d)
(a ==b)
(b ==c)
(d ==10.0)
第22题:
Foo has the value “”
Foo has the value null
An exception is thrown
The code will not compile
第23题:
foofoofoofoofoo
foobarfoobarbar
foobarfoofoofoo
foobarfoobarfoo
barbarbarbarbar
foofoofoobarbar
foofoofoobarfoo