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java软件开发工程师笔试题


  选择题


  1:


  In the following code, which is the earliest statement, where the object originally held in e, may be garbage collected:


  1.public class Test {


  2. public static void main (String args []) {


  3. Employee e = new Employee("Bob", 48);


  4. e.calculatePay();


  5. System.out.println(e.printDetails());


  6. e = null;


  7. e = new Employee("Denise", 36);


  8. e.calculatePay();


  9. System.out.println(e.printDetails());


  10. }


  11.}


  Only One:


  In the following code, which is the earliest statement, where the object originally held in e, may be garbage collected:


  1.public class Test {


  2. public static void main (String args []) {


  3. Employee e = new Employee("Bob", 48);


  4. e.calculatePay();


  5. System.out.println(e.printDetails());


  6. e = null;


  7. e = new Employee("Denise", 36);


  8. e.calculatePay();


  9. System.out.println(e.printDetails());


  10. }


  11.}


  Only One:


  A.Line 10


  B.Line 11


  C.Line 7


  D.Line 8


  2:Exhibit :


  1. public class test (


  2. private static int j = 0;


  3.


  4. private static boolean methodB(int k) (


  5. j += k;


  6. return true;


  6. )



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