Definition
A stack is a basic computer science data structure and can be defined in an abstract, implementation-free manner,
or it can be generally defined as a linear list of items in which all additions and deletion are restricted to one end that is Top.Stack Using Java Stack Utils Example Program
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Stack;
class StackProgram {
public static void main(String[] args) throws IOException {
Stack stk = new Stack();
stk.setSize(5);
boolean yes=true;
int choice;
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
do{
System.out.println("1).Push\n2).Pop\n3).Exit\n\nEnter Choice");
choice = Integer.parseInt(is.readLine());
switch(choice)
{
case 1: System.out.println("Enter Push Item: ");
stk.push(Integer.parseInt(is.readLine()));
break;
case 2: System.out.println("Poped Item : "+stk.pop());break;
case 3: yes = false;break;
default: System.out.println("Invalid Choice");
}
}while(yes==true);
}
}
Sample Output
Output is:
1).Push
2).Pop
3).Exit
Enter Choice
1
Enter Push Item:
23
1).Push
2).Pop
3).Exit
Enter Choice
1
Enter Push Item:
45
1).Push
2).Pop
3).Exit
Enter Choice
2
Poped Item : 45
1).Push
2).Pop
3).Exit
Enter Choice
2
Poped Item : 23
1).Push
2).Pop
3).Exit
