Java Basics and AWT Programming

There is no function defined in Scanner class to take character input. So, there is no function named nextChar(). So, this is the correct answer.

IOException is not a subclass of RuntimeException class, this class is a Subclass of Exception class. This exception is thrown when invalid input/output are given. So, this is the correct answer as this is not a subclass of RuntimeException class.

As the reason explained all of the given event types are valid in java. So, this option is correct.

As the reason is explained both methods in option 1 and 3 are not used by the web browser to control the applet. So, this option is correct.

This is correct answer because all of the given layout managers are present in java awt.

This function is not defined in the Frame class. This function is defined in JFrame class in Swings. So, this method cannot be invoked using the object of Frame class. But can be invoked using the Object of JFrame class. This method specifies the operation when the frame is closed. So, the following line would be false. Frame f1 = new frame(); f1.setDefaultCloseOperation(int); so, this is the correct answer.

If a class implements an interface then it is necessary for that class to define body to all the methods defined in the interface it is implementing. But, windowMoved() method is not present in windowListener interface. So, when a class will implement this interface this method need not to be define in the class. So, this option is correct.

This is correct answer because there are two constructors of borderlayout are present in java. These are:- BorderLayout():- creates a default borderlayout. BorderLayout(int hgap, int vgap):- create a borderlayout with specified horizontal and vertical gap between the components. So, this answer is correct.

This option is correct because there is no method defined fillCircle() in Graphics class. So, this option is correct.

This is correct choice because the constructor of the Font class takes Three parameters:- First:- first parameter is of String type which specifies the name of the Font. Second:- second parameter is of type int which specifies the style of the font like Font.BOLD. Third:- third parameter is of type int which specifies the size of the font. ExampleFont f1 = new Font(“Serif”, Font.BOLD, 32); So, this option is true.

This is the correct answer because color constructor creates a new colour but it takes parameters in the range 0-255. But here the value passed is 284(in first parameter). So, a runtime exception named “IllegalArgumentException” will be thrown by the JVM. So, this is the correct answer.

This is false choice because JList doesn’t generate an ActionEvent. When we click an item in JList ListSelectionEvent is generated. So, this is the true choice according to the question.

This is correct choice because there are 8 primitive data types in Java. These are: ByteShortIntLongDoubleCharFloatBoolean. So, this is correct answer.

This is correct answer because all of the given methods are valid in java event handling.

This is correct answer because there are only three constructors are there for FlowLayout. These are:- lowLayout():- create a default flowLayoutFlowLayout(int Alignment):- creates a flowlayout with specified alignment, where alignment can take value, FlowLayout.LEFT, FlowLayout.LEFT ,FlowLayout.LEFTFlowLayout(int alignment , int hgap, int vgap):- same as second constructor with specified horizontal and vertical gap between the components. So, this answer is correct.