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Quiz on Type Conversion in Java

by Quiz Orbit Team

Type Conversion in Java refers to changing a variable from one data type to another. Java supports two types of type conversion:

Widening (Implicit) Conversion – done automatically by the compiler
Narrowing (Explicit) Conversion – done manually using type casting

Understanding type conversion is essential for writing error-free and optimized Java code, especially when working with mixed data types.

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Question 1 of 15
1. Question
What is Widening Type Conversion in Java?
- When smaller data type is assigned to a larger one
- When larger data type is assigned to a smaller one
- Type conversion done manually
- None of the above
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Question 2 of 15
2. Question
What is the result of the following code?
int a = 100;
long b = a;
- Error
- Manual cast needed
- Works fine (implicit conversion)
- Runtime exception
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Question 3 of 15
3. Question
Which conversion requires a type cast in Java?
- `int` to `long`
- `char` to `int`
- `double` to `int`
- `byte` to `int`
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Question 4 of 15
4. Question
What is the result of: `int x = (int) 10.5;`?
- Compilation error
- 10
- 11
- 10.5
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Question 5 of 15
5. Question
Which of the following is NOT an implicit conversion?
- `int` to `double`
- `char` to `int`
- `float` to `byte`
- `short` to `int`
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Question 6 of 15
6. Question
Which keyword is used for explicit type conversion in Java?
- convert
- cast
- (type)
- toType()
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Question 7 of 15
7. Question
What will be the result of:
byte b = 127;
b++;
System.out.println(b);
- 127
- 128
- -128
- Error
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Question 8 of 15
8. Question
Which is safer – widening or narrowing conversion?
- Narrowing
- Widening
- Both are equally safe
- Depends on context
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Question 9 of 15
9. Question
What happens if you cast a large `double` to `int` in Java?
- Value is truncated
- Value is rounded
- Exception is thrown
- Exact value is stored
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Question 10 of 15
10. Question
Which of the following conversions is allowed implicitly?
- `int` to `byte`
- `double` to `int`
- `float` to `long`
- `char` to `int`
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Question 11 of 15
11. Question
What is the output of:
char ch = ‘A’;
int code = ch;
System.out.println(code);
- A
- 65
- Error
- 97
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Question 12 of 15
12. Question
Which data type has the highest precision in Java?
- float
- double
- long
- int
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Question 13 of 15
13. Question
What will be stored in `int x = (int) 3.999;`?
- 3
- 4
- 3.999
- Error
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Question 14 of 15
14. Question
Is the following valid?
short s = 10;
byte b = s;
- Yes
- No, needs explicit cast
- No, compile-time error
- Works on JVM only
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Question 15 of 15
15. Question
What is the range of byte in Java?
- -256 to 255
- 0 to 255
- -128 to 127
- -127 to 128
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Summary

This quiz on Java Type Conversion tests your understanding of implicit vs explicit casting, data loss during narrowing, and the behavior of Java’s strong typing system. Great for interviews, Java learners, and certification aspirants.

Tags: Java quiz java type conversion quiz quiz on java type conversion quiz on type conversion in java type conversion quiz in java

Quiz Orbit Team

At QuizOrbit, our team specializes in fun, informative quizzes across topics like general knowledge, technology, and entertainment. Boost your knowledge with our expert-designed quizzes.

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