after line 11 runs, how many objects are eligible for garbage collecti

1.	after line 11 runs, how many objects are eligible for garbage collection?
A.	0
B.	1
C.	2
D.	3
Answer» D. 3

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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?

after line 11 runs, how many objects are eligible for garbage collection?

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