Given the code fragment?
public class Test {
public static void main(String[] args) {
Test t = new Test();
int[] arr = new int[10];
arr = t.subArray(arr,0,2);
}
// insert code here
}
Which method can be inserted at line // insert code here to enable the code to compile?
A. public int[] subArray(int[] src, int start, int end) { return src; }
B. public int subArray(int src, int start, int end) { return src; }
C. public int[] subArray(int src, int start, int end) { return src; }
D. public int subArray(int[] src, int start, int end) { return src; }
Given the code fragment:
Which three lines fail to compile?
A. Line 7
B. Line 8
C. Line 9
D. Line 10
E. Line 11
F. Line 12
Which two statements are true for a two-dimensional array?
A. It is implemented as an array of the specified element type.
B. Using a row by column convention, each row of a two-dimensional array must be of the same size.
C. At declaration time, the number of elements of the array in each dimension must be specified.
D. All methods of the class Object may be invoked on the two-dimensional array.
Given:
What is the result?
A. The sum is 2
B. The sum is 14
C. The sum is 15
D. The loop executes infinite times
E. Compilation fails
int i, j=0;
i = (3* 2 +4 +5 ) ;
j = (3 * ((2+4) + 5));
System.out.println("i:"+ i + "\nj":+j);
What is the result?
A. Option A
B. Option B
C. Option C
D. Option D
Given:
Class A { }
Class B { }
Interface X { }
Interface Y { }
Which two definitions of class C are valid?
A. Class C extends A implements X { }
B. Class C implements Y extends B { }
C. Class C extends A, B { }
D. Class C implements X, Y extends B { }
E. Class C extends B implements X, Y { }
Given the code fragment: System.out.println(2 + 4 * 9 - 3); //Line 21 System.out.println((2 + 4) * 9 - 3); // Line 22 System.out.println(2 + (4 * 9) - 3); // Line 23 System.out.println(2 + 4 * (9 - 3)); // Line 24 System.out.println((2 + 4 * 9) - 3); // Line 25 Which line of codes prints the highest number?
A. Line 21
B. Line 22
C. Line 23
D. Line 24
E. Line 25
Given the code fragment: List colors = new ArrayList(); colors.add("green"); colors.add("red"); colors.add("blue");
colors.add("yellow"); colors.remove(2); colors.add(3,"cyan"); System.out.print(colors); What is the result?
A. [green, red, yellow, cyan]
B. [green, blue, yellow, cyan]
C. [green, red, cyan, yellow]
D. Am IndexOutOfBoundsException is thrown at runtime
Given:
What is the result?
A. Hello Log 2:2
B. Welcome Log 1:2
C. Welcome Log 2:1
D. Hello Log 1:2
Given the definitions of the Bird class and the Peacock class:
and the code fragment:
Which code snippet can be inserted to print Fly.Dance. ?
A. Bird p = new Peacock();
B. Bird b = new Bird(); Peacock p = (Peacock) b;
C. Peacock b = new Peacock (); Bird p = (Bird) b;
D. Bird b = new Peacock (); Peacock p = (Peacock) b;
