Java Variables Quiz

Which of the following is a correct declaration of a variable of type `int` in Java?

• `int num = 5.5;`

• `int num = 5;`

• `int num = "5";`

• `int num = '5';`

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DOK Level 3: Strategic Thinking

Given the following code snippet, what will be the output? ```java int a = 10; int b = 20; int c = a + b; System.out.println(c); ```

• `10`

• `20`

• `30`

• `40`

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DOK Level 3: Strategic Thinking

Which of the following primitive data types in Java has the largest range?

• `byte`

• `short`

• `int`

• `long`

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DOK Level 3: Strategic Thinking

Consider the following code: ```java double x = 5.0; int y = (int) x; ``` What is the value of `y` after the code is executed?

• `5.0`

• `5`

• `0`

• `Type mismatch error`

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DOK Level 3: Strategic Thinking

Which of the following statements is true about the `char` data type in Java?

• `char` can store any Unicode character.

• `char` can store only ASCII characters.

• `char` can store integer values.

• `char` can store floating-point numbers.

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DOK Level 3: Strategic Thinking

What will be the result of the following code? ```java boolean flag = true; if (flag) { System.out.println("Flag is true"); } else { System.out.println("Flag is false"); } ```

• `Flag is true`

• `Flag is false`

• `Compilation error`

• `Runtime error`

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DOK Level 3: Strategic Thinking

Which of the following is the correct way to declare a variable of type `float` in Java?

• `float num = 5.5;`

• `float num = 5.5f;`

• `float num = "5.5";`

• `float num = '5.5';`

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DOK Level 3: Strategic Thinking

What is the default value of a `boolean` variable in Java?

• `true`

• `false`

• `0`

• `null`

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DOK Level 3: Strategic Thinking

Given the following code, what will be the output? ```java int a = 5; int b = 2; double result = a / b; System.out.println(result); ```

• `2.5`

• `2.0`

• `2`

• `Compilation error`

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DOK Level 3: Strategic Thinking

Which of the following is not a primitive data type in Java?

• `int`

• `boolean`

• `String`

• `char`

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DOK Level 3: Strategic Thinking