class Bar { } class Test { Bar doBar() { Bar b = new Bar(); /* Line 6 */ return b; /* Line 7 */ } public static void main (String args[]) { Test t = new Test(); /* Line 11 */ Bar newBar = t.doBar(); /* Line 12 */ System.out.println("newBar"); newBar = new Bar(); /* Line 14 */ System.out.println("finishing"); /* Line 15 */ } } At what point is the Bar object, created on line 6, eligible for garbage collection?

after line 7, when doBar() completes

after line 15, when main() completes

class Bar { } class Test { Bar doBar() { Bar b =

1.	class Bar { } class Test { Bar doBar() { Bar b = new Bar(); /* Line 6 / return b; / Line 7 / } public static void main (String args[]) { Test t = new Test(); / Line 11 / Bar newBar = t.doBar(); / Line 12 / System.out.println("newBar"); newBar = new Bar(); / Line 14 / System.out.println("finishing"); / Line 15 */ } } At what point is the Bar object, created on line 6, eligible for garbage collection?
A.	after line 12
B.	after line 14
C.	after line 7, when doBar() completes
D.	after line 15, when main() completes
Answer» C. after line 7, when doBar() completes

Discussion

No Comment Found

Related MCQs

after line 11 runs, how many objects are eligible for garbage collection?
When is the object, created in line 3, eligible for garbage collection?
class X2 _x000D_ {_x000D_ public X2 x;_x000D_ public static void main(String [] args) _x000D_ {_x000D_ X2 x2 = new X2(); /* Line 6 */_x000D_ X2 x3 = new X2(); /* Line 7 */_x000D_ x2.x = x3;_x000D_ x3.x = x2;_x000D_ x2 = new X2();_x000D_ x3 = x2; /* Line 11 */_x000D_ doComplexStuff();_x000D_ }_x000D_ }_x000D_ _x000D_ after line 11 runs, how many objects are eligible for garbage collection?
What allows the programmer to destroy an object x?
class X2 { public X2 x; public static void main(String [] args) { X2 x2 = new X2(); /* Line 6 */ X2 x3 = new X2(); /* Line 7 */ x2.x = x3; x3.x = x2; x2 = new X2(); x3 = x2; /* Line 11 */ doComplexStuff(); } } after line 11 runs, how many objects are eligible for garbage collection?
class HappyGarbage01 { public static void main(String args[]) { HappyGarbage01 h = new HappyGarbage01(); h.methodA(); /* Line 6 */ } Object methodA() { Object obj1 = new Object(); Object [] obj2 = new Object[1]; obj2[0] = obj1; obj1 = null; return obj2[0]; } } Where will be the most chance of the garbage collector being invoked?
class Bar { } class Test { Bar doBar() { Bar b = new Bar(); /* Line 6 */ return b; /* Line 7 */ } public static void main (String args[]) { Test t = new Test(); /* Line 11 */ Bar newBar = t.doBar(); /* Line 12 */ System.out.println("newBar"); newBar = new Bar(); /* Line 14 */ System.out.println("finishing"); /* Line 15 */ } } At what point is the Bar object, created on line 6, eligible for garbage collection?
public Object m() { Object o = new Float(3.14F); Object [] oa = new Object[l]; oa[0] = o; /* Line 5 */ o = null; /* Line 6 */ oa[0] = null; /* Line 7 */ return o; /* Line 8 */ } When is the Float object, created in line 3, eligible for garbage collection?
class Test { private Demo d; void start() { d = new Demo(); this.takeDemo(d); /* Line 7 */ } /* Line 8 */ void takeDemo(Demo demo) { demo = null; demo = new Demo(); } } When is the Demo object eligible for garbage collection?
public class X { public static void main(String [] args) { X x = new X(); X x2 = m1(x); /* Line 6 */ X x4 = new X(); x2 = x4; /* Line 8 */ doComplexStuff(); } static X m1(X mx) { mx = new X(); return mx; } } After line 8 runs. how many objects are eligible for garbage collection?

Discussion

No Comment Found

Related MCQs

Reply to Comment