Programming in Java

 Which four options describe the correct default values for array elements of the types indicated? int -> 0 String -> "null" Dog -> null char -> '\u0000' float -> 0.0f boolean -> true  
 
1, 3, 4, 5
1, 2, 3, 4
2, 4, 5, 6
3, 4, 5, 6
 


  Which will legally declare, construct, and initialize an array?  
 
int myList [] = {4, 3, 7};
int myList [] [] = {4,9,7,0};
int [] myList = (5, 8, 2);
int [] myList = {"1", "2", "3"};
 


  Which is a reserved word in the Java programming language?  
 
native
method
subclasses
reference
 


  Which is a valid keyword in java?  
 
interface
string
Float
unsigned
 


  Which is the valid declarations within an interface definition?
 
public double methoda();
public final double methoda();
static void methoda(double d1);
protected void methoda(double d1);
 


  Which one is a valid declaration of a boolean?  
 
boolean b3 = false;
boolean b1 = 0;
boolean b4 = Boolean.false();
boolean b5 = no;
 


  Which three are valid declarations of a float? float f1 = -343; float f2 = 3.14; float f3 = 0x12345; float f4 = 42e7; float f5 = 2001.0D; float f6 = 2.81F;  
 
1, 3, 6
1, 2, 4
2, 3, 5
2, 4, 6
 


  Which is a valid declarations of a String?  
 
String s1 = null;
String s2 = 'null';
String s3 = (String) 'abc';
String s4 = (String) '\ufeed';
 


  What is the numerical range of a char?
 
0 to 65535
0 to 32767
-(215) to (215) - 1
-128 to 127
 


  You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?  
 
protected
private
public
transient