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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?

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Java Trainer with 19 years of IT experience

Only one. After line 8 the original object referred to by x2 is dereferenced and ready for garbage collection. In m1(), mx ignores the object passed as argument and refers to a new object which is returned.
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Software Developer, Expertise in Java/J2ee Technology.

1
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only 1 will be eligible.
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Industry expert and professional lecturer/trainer

1
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Master

1 which was assigned to x2
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Java/J2EE, B.E./B.Tech/MCA SubjectsTraining

1 Object
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Experience in Java and Android Trainer.

Only 1 because java is pass by value, so the reference variable x is not affected by the m1() method.
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Real Time Java

1 object
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Java Trainer

No objects are eligible for garbage collection
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Java Trainer

1 object
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