91. Which of these methods can randomize all elements in a list?
92. If two threads access the same hashmap at the same time, what would happen?
93. Which of these methods can be used to obtain a static array from an ArrayList object?
94. Which of these method is used to insert value and its key?
95. Which of these method is used to remove all keys/values pair from the invoking map?
96. What will be the output of the following Java program?
import java.util.*;
class Collection_iterators
{
public static void main(String args[])
{
ListIterator a = list.listIterator();
if(a.previousIndex()! = -1)
while(a.hasNext())
System.out.print(a.next() + " ");
else
System.out.print("EMPTY");
}
}
import java.util.*;
class Collection_iterators
{
public static void main(String args[])
{
ListIterator a = list.listIterator();
if(a.previousIndex()! = -1)
while(a.hasNext())
System.out.print(a.next() + " ");
else
System.out.print("EMPTY");
}
}97. What will be the output of the following Java program?
import java.lang.reflect.*;
class Additional_packages
{
public static void main(String args[])
{
try
{
Class c = Class.forName("java.awt.Dimension");
Method methods[] = c.getMethods();
for (int i = 0; i < methods.length; i++)
System.out.println(methods[i]);
}
catch (Exception e)
{
System.out.print("Exception");
}
}
}
import java.lang.reflect.*;
class Additional_packages
{
public static void main(String args[])
{
try
{
Class c = Class.forName("java.awt.Dimension");
Method methods[] = c.getMethods();
for (int i = 0; i < methods.length; i++)
System.out.println(methods[i]);
}
catch (Exception e)
{
System.out.print("Exception");
}
}
}98. What happens if we put a key object in a HashMap which exists?
99. Which of these interface handle sequences?
100. How to externally synchronize hashmap?
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