Converting num to str as I want to avoid classes

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Java

New to Java
hey in my enhanced if statement
if have this programme
in which if have written time how do I convert from num to string as you can see it cannot
write AM and giving an error

What I have tried:

public class Hello {

public static void main(String args[]) {

Scanner bucky=new Scanner(System.in);
int h,m,s,hour,miniute,second,time;
h=28;
m=33;
s=55;
hour=((h>=0&&h<12)?h:0);
miniute=((m>=0&&m<60)?m:0);
second=((s>=0&&s<60)?s:0);
time=((h<12)?"AM":"PM");
System.out.printf("%02d:%02d:%02d%s",hour,miniute,second,time);
}
}