This program for Garbage Collection in Java is not working and showing error that"no public class found to execute"

Question

class sample {

    String x;
 public Test(String x) 
{

        this.x=x;
}
static void show()
 {
 sample t1= newsample("t1"); 
  display();
}
static void display()
 {
 sample t2= new sample("t2"); 
}
public static void main(String args[])
{
  show();
System.gc();
 }
 @Override
protected void finalize()
throws Throwable 
 {

        System.out.println(this.x+ " successfully garbage collected");
}
}

Answer 1

The class with main() needs to be public. No keyword means that it's package private: only classes that are in same package can access it.

Answer 2

But it's still not working.Can you please send me the correct code.

Answer 3

Does this class have main() method?

Answer 4

yes

Answer 5

Save it in code playground and link it here.