To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) good - This option is correct.
In the given code, the variable sName
is initially assigned the value "good". The nameTest
method is called with the sName
variable as an argument. In the nameTest
method, the sName
parameter is concatenated with the string " idea" and then the start
method of the Thread
class is called. This starts a new thread of execution and invokes the run
method defined in the Test
class.
In the run
method, a for loop is executed four times, where the value of i
is appended to the sName
string. However, the sName
variable in the run
method is not the same as the sName
parameter in the nameTest
method. Therefore, the changes made to sName
in the run
method do not affect the original sName
variable.
After the thread is started, the main thread continues execution and prints the value of sName
, which is still "good".
Option B) good idea - This option is incorrect. The output is not "good idea" because the changes made to sName
in the run
method do not affect the original sName
variable.
Option C) good idea good idea - This option is incorrect. The output is not "good idea good idea" because the changes made to sName
in the run
method do not affect the original sName
variable.
Option D) good 0 good 0 1 - This option is incorrect. The output is not "good 0 good 0 1" because the changes made to sName
in the run
method do not affect the original sName
variable.
The correct answer is Option A) good. This option is correct because the value of sName
remains unchanged after the execution of the code.