A. A static inner class requires a static initializer.
B. A static inner class requires an instance of the enclosing class.
C. A static inner class has no reference to an instance of the enclosing class.
D. A static inner class has access to the non-static members of the outer class.
E. Static members of a static inner class can be referenced using the class name of the static inner class.
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public class MethodOver {
private int x， y；
private float z；
public void setVar（int a， int b， float c）{
x = a；
y = b；
z = c；
}
}
Which two overload the setVar method？（）
A. void setVar （int a， int b， float c）{ x = a； y = b； z = c； }
B. public void setVar（int a， float c， int b） { setVar（a， b， c）； }
C. public void setVar（int a， float c， int b） { this（a， b， c）； }
D. public void setVar（int a， float b）{ x = a； z = b； }
E. public void setVar（int ax， int by， float cz） { x = ax； y = by； z = cz； }
class A {
public String toString （） {
return “4”；
}
}
class B extends A {
8. public String toString （） {
return super.toString（） + “3”；
}
}
public class Test {
public static void main（Stringargs） {
System.out.printIn（new B（））；
}
}
What is the result？（）
A. Compilation succeeds and 4 is printed.
B. Compilation succeeds and 43 is printed.
C. An error on line 9 causes compilation to fail.
D. An error on line 14 causes compilation to fail.
E. Compilation succeeds but an exception is thrown at line 9.
A. Member data have no access modifiers.
B. Member data can be modified directly.
C. The access modifier for methods is protected.
D. The access modifier to member data is private.
E. Methods provide for access and modification of data.
A. Int foo = （int） Math.max（bar）；
B. Int foo = （int） Math.min（bar）；
C. Int foo = （int） Math.abs（bar）；
D. Int foo = （int） Math.ceil（bar）；
E. Int foo = （int） Math.floor（bar）；
F. Int foo = （int） Math.round（bar）；
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. An exception is thrown.
B. The code will not compile.
C. The program prints “null”
D. The program prints “blue”
E. The program prints “green”
A. Java.io.InputStream.
B. Java.io.EncodedReader.
C. Java.io.InputStreamReader.
D. Java.io.InputStreamWriter.
E. Java.io.BufferedInputStream.
A. New dataInputStream（“in.txt”）；
B. New dataInputStream（new file（“in.txt”））；
C. New dataInputStream（new writer（“in.txt”））；
D. New dataInputStream（new FileWriter（“in.txt”））；
E. New dataInputStream（new InputStream（“in.txt”））；
F. New dataInputStream（new FileInputStream（“in.txt”））；
public class Foo implements Runnable （
public void run （Thread t） {
system.out.printIn（“Running.”）；
}
public static void main （String args） {
new thread （new Foo（））.start（）；
}
）
What is the result？（）
A. An exception is thrown.
B. The program exists without printing anything.
C. An error at line 1 causes compilation to fail.
D. An error at line 6 causes the compilation to fail.
E. “Running” is printed and the program exits.
A. Exiting from a synchronized block.
B. Calling the wait method on an object.
C. Calling the notify method on an object.
D. Calling the notifyAll method on an object.
E. Calling the setPriority method on a thread object.
public class ForBar {
public static void main（String args） {
int i = 0， j = 5；
tp： for （；；） {
i ++；
for（；；）
if（i > --j） break tp；
}
system.out.printIn（“i = ” + i + “， j = “+ j）；
}
}
What is the result？ （）
A. The program runs and prints “i=1， j=0”
B. The program runs and prints “i=1， j=4”
C. The program runs and prints “i=3， j=4”
D. The program runs and prints “i=3， j=0”
E. An error at line 4 causes compilation to fail.
F. An error at line 7 causes compilation to fail.
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