Interview Questions - 17-02-2018

Ness
==========
1. OOP principles
2. Spring annotations
3. will it compile?
class pare12{
public void dis(String s1){
System.out.println("parent");
}

}
class chil12 extends pare12{


public void dis(Object s1){

System.out.println("child");
}
}
4. String s="java is programming language"
o/p :  programming language si avaj

/* program

String s="java is programming language";

String FirstHalfstr=s.substring(0,s.length()/2 );
String SecondHalfstr=s.substring(s.length()/2,s.length());
String revstr=" ";
for(int i=0;i<FirstHalfstr.length();i++){
revstr=FirstHalfstr.charAt(i)+revstr;
}
System.out.println(SecondHalfstr+" "+revstr);







*/

5. outputs ?
 set s=new Hashset();
s.add(5);
s.add(5f);

6.

s.add(5.0);
s.add(5f);