單項(xiàng)選擇題

Which statements are true， given the code new FileOutputStream（"data"， true） for creating an object of class FileOutputStream？（）

A.FileOutputStream has no constructors matching the given arguments.
B.An IOExeception will be thrown if a file named "data" already exists.
C.An IOExeception will be thrown if a file named "data" does not already exist.
D.If a file named "data" exists， its contents will be reset and overwritten.
E.If a file named "data" exists， output will be appended to its current contents.

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多項(xiàng)選擇題

Which statements concerning the event model of the AWT are true？（）

A.At most one listener of each type can be registered with a component.
B.Mouse motion listeners can be registered on a List instance.
C.There exists a class named ContainerEvent in package java.awt.event.
D.There exists a class named MouseMotionEvent in package java.awt.event.
E.There exists a class named ActionAdapter in package java.awt.event.

單項(xiàng)選擇題

What will be the appearance of an applet with the following init（） method？
public void init（） {
add（new Button（"hello"））； }

A.Nothing appears in the applet.
B.A button will cover the whole area of the applet.
C.A button will appear in the top left corner of the applet.
D.A button will appear， centered in the top region of the applet.
E.A button will appear in the center of the applet.

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Which statements are true， given the code new FileOutputStream（"data"， true） for creating an object of class FileOutputStream？（）

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Which statements concerning the event model of the AWT are true？（）

What will be the appearance of an applet with the following init（） method？ public void init（） { add（new Button（"hello"））； }

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Which statements are true， given the code new FileOutputStream（"data"， true） for creating an object of class FileOutputStream？（）

What will be the appearance of an applet with the following init（） method？
public void init（） {
add（new Button（"hello"））； }