Given the code fragment:

What is the result?

• A.Hi removed
• B.The program compiles, but it prints nothing.
• C.An UnsupportedOperationException is thrown at runtime.
• D.Compilation fails.

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Given the code fragment:

What is the result?

• A.An ArrayoutofBoundsException is thrown at runtime.
• B.Compilation fails.
• C.1:2:3:4:5:
• D.1:2:3:

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Given the code fragment:

Which code fragment, when inserted at line 9, enables the code to print true?

• A.String str2 = str1;
• B.String str2 = sb1. toString();
• C.String str2 = "Duke";
• D.String str2 = new String(str1);

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The following grid shows the state of a 2D array:

This grid is created with the following code:

Which line of code, when inserted in place of //line n1, adds an X into the grid so that the grid contains three consecutive X's?

• A.grid[2][0] = 'X';
• B.grid[1][3] = 'X';
• C.grid[1][2] = 'X';
• D.grid[0][2] = 'X';
• E.grid[3][1] = 'X';

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Given the code fragment:

Which action enables it to print AB?

• A.Comment line 20.
• B.Comment line 16.
• C.Comment lines 18 to 21.
• D.Comment line 19.

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