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static String count(ArrayList mylist){
int a = 0,b = 0,c = 0;
for(int i = 0; i < mylist.size(); i++){
Object element=mylist.get(i);
if(element instanceof Student)
a++;
if(element instanceof Rockstar)
b++;
if(element instanceof Hacker) , program is correct and output also correct but test case not passed
c++;
}
my
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Java Instanceof keyword
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static String count(ArrayList mylist){ int a = 0,b = 0,c = 0; for(int i = 0; i < mylist.size(); i++){ Object element=mylist.get(i); if(element instanceof Student) a++; if(element instanceof Rockstar) b++; if(element instanceof Hacker) , program is correct and output also correct but test case not passed c++; }