how to make the double-tone class ? as we have singletone
class..?
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Answer Posted / sagar kumar
public class DoubletonTest {
public static void main(String[] args) {
Helloo h1=Helloo.getHello(1);
Helloo h2=Helloo.getHello(2);
Helloo h3=Helloo.FIRST;
Helloo h4=Helloo.SECOND;
System.out.println(h1);
System.out.println(h2);
System.out.println(h3);
System.out.println(h4);
System.out.println(h1==h3);//true
System.out.println(h2==h4);//true
}
}
class Helloo{
private Helloo(){
}
final static public Helloo FIRST=new Helloo();
final static public Helloo SECOND=new Helloo();
static public Helloo getHello(int val){
if (val<1 || val>2) {
throw new IllegalArgumentException(" "+val);
}
if (val==1) {
return FIRST;
}
return SECOND;
}
}
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