using loop to find duplicate

i am new to java and am experienceing difficulty in writing a simple loop.

what i would like to say is:
// if line != ""(blank line) continue loop;
// if duplicate lines entered by user sout("Duplicate: " + line)
// if the line is == to "" print Bye

i am getting in a mess trying and have been for several hours, help would be appreciated, i think its a case of not understanding the logic.

George

What exactly do you want? Explain it less cryptic than you've done now. And show us what you've done so far.

Also you want the loop to stop if it's a blank line ("") AND print it Bye? How do you store all lines? In an array, or only the last?

it only looks at the previous line to check if it is the same.

If a line exactly equal output
Duplicated: ..line....
program continues till a blank line entered. if it is it will output Bye and exit

code i have tried:

Code:

---

String end = "";
String name;
while(name != end)
{
    if (name.equalsIgnoreCase(end))
{
System.out.println("Bye");
break;
}
else
{
if (name.equals(name = scan.nextLine()));
System.out.println("Duplicated:" + name);
else
name = scan .nextLine();
}
}

---

1. How did you going to change the variable name?
2. However you should assign new value to the variable name before working on.

Code:

---

name = scan .nextLine();

---

I have now managed to create something that works very effectively.

code is as follows(brakets may be in wrong place.:

Code:

---

public static void main(String[] args)
{
        String line, end = ("");
        Scanner scan = new Scanner(System.in);

        System.out.println("Please enter lines of text: ");
        line = scan.nextInt;

while(!line.equals(end))
{
        if(line.equals(line = scan.nextLine()))
        {
        System.out.println("Duplictated: " + line);
        }
        else
        {
        continue;
        }
        }
if (line.equalsIgnoreCase(end))
System.out.println("Bye");
}

---

Thanx for all the help
George

What you trying to do with this?

Code:

---

        else
        {
        continue;
        }

---

Ah thanx i see you point that is a pointless bit of code. Have now removed it and it is still fully functioning. The if is in the while so it will continue anyway until the condition is false.

George

Ya, it's redundant line of code. Much better to avoid such things.