Separating Strings by a comma-CodePudding

I have to separate a string with a comma into two names. So if the input is Sarah, Low: then the first name is Sarah and the second name is Low. But to figure that out, it uses a comma. My code doesn't run and I am confused why. I think that the error is in the nested if statement, but I don't know what else to do. Any help would be much appreciated.

Code:

  String userInput; 
  String name1; 
  String name2; 
  
  while (true) { 
     System.out.println("Enter input string:"); 
     userInput = scnr.nextLine(); 
     userInput = userInput.trim(); 
     if (userInput.equals("q")) { 
        break; 
     } 
  } 
  for (int i = 0; i < userInput.length(); i  ) { 
     if (userInput(i).equals(",") {
        name1 = userInput.substring(0, userInput.indexOf(",")); 
        name2 = userInput.substring(userInput.indexOf(",")   1, userInput.length()); 
        System.out.println("First word:"   name1); 
        System.out.println("Second words:"   name2); 
     } 
     else { 
        System.out.println("Error: No comma in string."); 
     } 
  }

CodePudding user response：

Your code asks for some user input in an infinite loop and only breaks from it when the user types q. It means that your userInput will always be q when you start the for loop.

In addition to that your code does not even compile as a Java code because of other errors already described by others.

CodePudding user response：

Based on my understanding of your question, I believe you would like to keep entering names with comma and let the program separate the userInput using comma into two names- name1 and name2 respectively. When you are done, you would press q to exit the program. Here is a cleaner code snippet to do the job instead of using a for loop-

while(true) {
            Scanner scanner = new Scanner(System.in);
            System.out.println("Enter Name with comma OR type q to Quit:");
            String userInput = scanner.nextLine();
            userInput = userInput.trim();
            if (userInput.equals("q")) {
                System.out.println("Stopped.");
                return;
            }
            String[] nameSplitByComma = userInput.split(",");
            if (nameSplitByComma.length < 2) {
                System.out.println("Error: No comma in string.");
            } else {
                String name1 = nameSplitByComma[0];
                String name2 = nameSplitByComma[1];
                System.out.println("First word:"   name1);
                System.out.println("Second words:"   name2);
            }
        }