Core Java preguntas y respuestas de entrevista
Test your skills through the online practice test: Core Java Quiz Online Practice Test
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
Pregunta 221. Can a Byte object be cast to a double value?
No, an object cannot be cast to a primitive value.
Es util?
Agregar comentario
Ver comentarios
Pregunta 222. How is rounding performed under integer division?
The fractional part of the result is truncated. This is known as rounding toward zero.
Es util?
Agregar comentario
Ver comentarios
Pregunta 223. What would you use to compare two String variables - the operator == or the method equals()?
I would use the method equals() to compare the values of the Strings and the == to check if two variables point at the same instance of a String object.
Es util?
Agregar comentario
Ver comentarios
Pregunta 224. Which non-Unicode letter characters may be used as the first character of an identifier?
The non-Unicode letter characters $ and _ may appear as the first character of an identifier
Es util?
Agregar comentario
Ver comentarios
Pregunta 225. What is a hashCode?
hash code value for this object which is unique for every object.
Es util?
Agregar comentario
Ver comentarios
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
Lo mas util segun los usuarios:
- How could Java classes direct program messages to the system console, but error messages, say to a file?
- What are the differences between an interface and an abstract class?
- Why would you use a synchronized block vs. synchronized method?
- How can you force garbage collection?
- What are the differences between the methods sleep() and wait()?