Primitives, Strings and Operators →hardMultiple SelectObjective-mapped

1Z0-811 Primitives, Strings and Operators Practice Question

Which three of the following are valid ways to declare and initialize a variable of type int? (Choose three.)

⚠ Common exam trap

Oracle often tests the distinction between valid integer literal formats and invalid ones, such as using a digit 2 in a binary literal or assigning a floating-point literal without a cast, which candidates might overlook due to familiarity with other languages.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

int b = 0xA;

`0xA` is a hexadecimal integer literal in Java, representing the decimal value 10. Java allows hexadecimal literals using the prefix `0x` or `0X`, and they are valid for initializing an `int` variable.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
int b = 0xA;
Why this is correct
Correct: hexadecimal literal 0xA equals 10 decimal.
✗
int e = 10.0;
Why it's wrong here
Incorrect: 10.0 is a double literal, and assigning to int requires a cast.
✓
int d = 010;
Why this is correct
Correct: octal literal 010 equals 8 decimal.
✗
int c = 0b2;
Why it's wrong here
Incorrect: binary literal can only contain 0 and 1; '2' is invalid.
✓
int a = 10;
Why this is correct
Correct: decimal literal 10 is valid for int.

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1Z0-811 Primitives, Strings and Operators Practice Question

Why each option matters

Option-by-option breakdown

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