Question
If a class needs to handle events generated by button then which of the following interface a class needs to implement?
Select correct option:
ComponentListener
KeyListener
MouseListener
ActionListener
Question
WindowListener interface contains _______ methods.
Select correct option:
Four
Six
Seven
Eight
Question
What will happen if static modifier is removed from the signature of main method?
Select correct option:
The program does not compile
The program compiles and runs successfully
The program compiles but does not run
None of given options (not sure)
Question
A variable declared as static in a class is a/an _________
Select correct option:
Instance variable
Class variable
Const variable
Global variable
Question
Which of the following syntax is used to get DataBaseMetaData object?
Select correct option:
DataBaseMetaData md = rs.getMetaData();
// where rs is ResultSet object
DataBaseMetaData md = st.getMetaData();
// where st is Statement object
DataBaseMetaData md = con.getMetaData();
// where con is Connection object
DataBaseMetaData md = rsmd.getMetaData();
// where rsmd is ResultSetMetaData object
Question
FTP (File Transmission Protocol)works on _________ port.
Select correct option:
21
23
80
84
Question
The classes which contain the word _____ are byte oriented streams.
Select correct option:
Reader
Writer
Stream
Byte
Question
Which of the following command is used to run java program?
Select correct option:
java filename.java
java filename
javac filename.java
javac filename
Question
Which of the following method is used to move the cursor to given row number?
Select correct option:
absolute(int);
absolute();
moveToInsertRow(int);
insertRow();