Java EE 习题 1 - 未名空间MITBBS历史存档

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Java EE 习题 1

Java EE 习题 1# Java - 爪哇娇娃

s*82010-04-12 07:04

1 楼

import javax.ejb.*;
import javax.annotation.*;
import javax.persistence.*;
______________
public class HelloBean {
public void hello() {
...
}
}
Which of the following annotations can be added to the blank to make
HelloBean a valid EJB bean class (there may be more than one correct answers
)?
A, @Stateless
B, @Stateful
C, @Singleton
D, @EJB
E, @Entity
F, @ManagedBean
G, All of the above
H, None of the above

q*u2010-04-12 07:04

2 楼

abde
cheat sheet一把，ms没有singleton和ManagedBean

import javax.ejb.*;
import javax.annotation.*;
import javax.persistence.*;
______________
public class HelloBean {
public void hello() {
...
}
}
Which of the following annotations can be added to the blank to make
HelloBean a valid EJB bean class (there may be more than one correct answers
)?
A, @Stateless
B, @Stateful
C, @Singleton
D, @EJB
E, @Entity
F, @ManagedBean
G, All of the above
H, None of the above

【在 s***8 的大作中提到】

: import javax.ejb.*;
: import javax.annotation.*;
: import javax.persistence.*;
: ______________
: public class HelloBean {
: public void hello() {
: ...
: }
: }
: Which of the following annotations can be added to the blank to make

s*82010-04-12 07:04

3 楼

abc
Singleton is new in ejb 3.1, ManagedBean is new in Java EE 6.
@EJB declares a ejb-ref, not ejb bean class.
@Entity declares a persistence entity, which is not EJB.

q*u2010-04-12 07:04

4 楼

哟呵，3.1, ee6, 好题阿。。。

abc
Singleton is new in ejb 3.1, ManagedBean is new in Java EE 6.
@EJB declares a ejb-ref, not ejb bean class.
@Entity declares a persistence entity, which is not EJB.

【在 s***8 的大作中提到】

: abc
: Singleton is new in ejb 3.1, ManagedBean is new in Java EE 6.
: @EJB declares a ejb-ref, not ejb bean class.
: @Entity declares a persistence entity, which is not EJB.

q*u2010-04-12 07:04

5 楼

接着贴阿，再接再厉

import javax.ejb.*;
import javax.annotation.*;
import javax.persistence.*;
______________
public class HelloBean {
public void hello() {
...
}
}
Which of the following annotations can be added to the blank to make
HelloBean a valid EJB bean class (there may be more than one correct answers
)?
A, @Stateless
B, @Stateful
C, @Singleton
D, @EJB
E, @Entity
F, @ManagedBean
G, All of the above
H, None of the above

【在 s***8 的大作中提到】