Application Of Stack

LineStack
public class LineStack<T> {
StackNode <T> Top;

public Boolean isEmpty(){
if (Top==null)
return true;
else
return false;


}

public void push (T data) {
StackNode<T> newNode = new StackNode<T> (data);
if (isEmpty()){
Top=newNode;
else
newNode.next=Top;
Top=newNode;

}


}
}

////////////////////////////////


StackNode:

public class StackNode<T>  {

T data;
StackNode<T>next;

StackNode(T d){
data=d;

}

}

/////////////////////////////////////////

public class StackAppDemo {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

LineStack<Character> MyStk= new LineStack<Character>()

}

}

//////////////////////////////////////////////////

public class ArithematicExp {

public void infixToPostfix(String Exp){

String Postfix;

LinkStack<T> ExpStk=new LinkStack<Character>;

int i=0;

while (i<Exp.length()){

char ch=Exp.charAt(i);

switch(ch){

case ch='('||'{'||'['

{

}

}

}

i++;

}

}