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单选题
Given： foo and bar are public references available to many other threads， foo refers to a Thread and bar is an Object. The thread foo is currently executing bar.wait（）. From another thread， what provides the most reliable way to ensure that foo will stop executing wait（）？（）
A
foo.notify（）；
B
bar.notify（）；
C
foo.notifyAll（）；
D
Thread.notify（）；
E
bar.notifyAll（）；
F
Object.notify（）；
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考题
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Jar AB
Jar BC
Jar CD
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考题
单选题public class Test { public static void main （String [] args） { string foo = “blue”； string bar = foo； foo = “green”； System.out.printIn（bar）； } } What is the result？（）A
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考题
单选题You have read/write permission on an ordinary file foo. You have just run In foo bar. What would happen if you ran rm foo？（）A
foo and bar would both be removed.B
foo would be removed while bar would remain accessible.C
foo would be removed， bar would still exist but would be unusable.D
Both foo and bar would remain accessible.E
You would be asked whether bar should be removed.
考题
单选题Given： foo and bar are public references available to many other threads， foo refers to a Thread and bar is an Object. The thread foo is currently executing bar.wait（）. From another thread， what provides the most reliable way to ensure that foo will stop executing wait（）？（）A
foo.notify（）；B
bar.notify（）；C
foo.notifyAll（）；D
Thread.notify（）；E
bar.notifyAll（）；F
Object.notify（）；
考题
单选题Given： foo and bar are public references available to many other threads. foo refers to a Thread and bar is anObject. The thread foo is currently executing bar.wait（）. From another thread，what provides the most reliable wayto ensure that foo will stop executing wait（）？A
foo.notify（）；B
bar.notify（）；C
foo.notifyAll（）；D
Thread.notify（）；E
bar.notifyAll（）；
考题
单选题foo and bar are public references available to many other threads. foo refers to a Thread and bar is an Object. The thread foo is currently executing bar.wait（）. From another thread， which statement is the most reliable way to ensue that foo will stop executing wait（）？A
foo.notify（）；B
bar.notify（）；C
foo.notifyAll（）；D
Thread.notify（）；E
bar.notiFYAll（）；F
Object.notify（）；
考题
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
考题
单选题Given the JSP code： 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？（）A
String x = （String） pageContext.getAttribute（foo）B
String x = （String） pageContext.getRequestScope（foo）C
It is NOT possible to access the pageContext object from within doStartTagD
String x = （String） pageContext.getRequest（）.getAttribute（foo）E
String x = （String） pageContext.getAttribute（foo， PageContext.ANY_SCOPE）
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