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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}

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