Java Core Classes and Threads

readLine()

read()

write()

both (1) and (2)

none of the above

Throwable is the superclass of all exception classes in Java.

Stack overflow is an example of runtime exception.

Checked exceptions occurr due to user error.

Finally clause is used to free the resources allocated by the methods in the beginning of the program.

All of the above

abstract V get(Object key)

abstract V put(K key, V value)

abstract Enumeration<k> keys() </k>

abstract int size()

none of the above

HashMap

HashSet

Dictionary

BufferredReader

None of the above

Set

List

Queue

ArrayDeque

Map

Platform independent

Multithreaded

Explicit pointers

Object oriented

None of these

public int hashCode(String s) { int h = 0; char val[] = s.toCharArray(); for (int i = 0; i < value.length; i++) { h = 31 * h + val[i]; } } return h; }

public int hashCode(String s) { int h = 0; char val[] = s.toCharArray(); for (int i = 0; i < value.length; i++) { h = 27 * h + val[i]; } } return h; }

public int hashCode(String s) { int h = 0; char val[] = s.toCharArray(); for (int i = 0; i < value.length; i++) { h = 131 * h + val[i]; } } return h; }

public int hashCode(String s) { int h = 0; char val[] = s.toCharArray(); for (int i = 0; i < value.length; i++) { h = 231 * h + val[i]; } } return h; }

public int hashCode(String s) { int h = 0; char val[] = s.toCharArray(); for (int i = 0; i < value.length; i++) { h = 531 * h + val[i]; } } return h; }

System.gc()

System.garbage();

System.gcollector()

System.memoryfree();

None of these

getaddress()

getHostAddress()

getHostName()

hashCode()

toString()

getAppletContext()

getAppletInfo()

getCodeBase()

getDocumentBase()

destroy()

ActionEvent

AdjustmentEvent

ItemEvent

ComponentEvent

FocusEvent

KeyEvent

MouseEvent

TextEvent

WindowEvent

InputEvent

getInetAddress()

getPort()

getLocalPort()

Socket()

getInputStream()

toBytes()

getRawRequest()

writeString()

error()

writeUCE()

getName()

getSize()

getStyle()

isBold()

getFontName()