SCJP6.0 Questions

11:01 AM

Does this code compiles?

static float[] arr3 = {} ;

Answer: Yes.  Empty array

Legal Identifiers:

private int _s ;  // correct

private int $USA ;  // correct

private int $$$$45, ______, ss ;  // correct

Is this legal?

private static int s = getS() ;

private static int y = 5 ;

private static int getS(){

return y ;

}        // YES

What is the output of this code? (watch the println)

boolean log = false ;

boolean log1 = true ;

boolean log2 = false ;

boolean log3 = true ;

       

if ( log && !log1 || log2 || log3) {

System.out.println("#############################################  :TRUE") ;

}

What is the output of this code?

Hashtable ht = new Hashtable() ;

ht.put("monday","write program") ;

ht.put("monday","read mails") ;

System.out.println( "Hash table" + ht ) ;

Answer:   Hash table {Monday=read mails}