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Pankaj Gupta
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What is the difference between next() and nextLine()?

What is the difference between next() and nextLine()?

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javanext()nextline()
  1. Pankaj Gupta
    Pankaj Gupta Scholar

    1. next() Function: Reads the next token (word) from input. Delimiter: Stops reading when it encounters whitespace (space, tab, or newline). Ignores: Leading whitespace before the token. Use case: Good for reading single words. Example: Scanner sc = new Scanner(System.in); System.out.print("Enter yoRead more

    1. next()

    • Function: Reads the next token (word) from input.

    • Delimiter: Stops reading when it encounters whitespace (space, tab, or newline).

    • Ignores: Leading whitespace before the token.

    • Use case: Good for reading single words.

    Example:

    Scanner sc = new Scanner(System.in);
    System.out.print("Enter your name: ");
    String name = sc.next();
    System.out.println("You entered: " + name);

    Input:

    Rahul Sharma

    Output:

    You entered: Rahul

    👉 It only captures "Rahul" because next() stops at the first space.

    2. nextLine()

    • Function: Reads the entire line of input (until Enter/\n).

    • Delimiter: Stops only when the newline character is encountered.

    • Use case: Good for reading sentences or full lines with spaces.

    Example:

    Scanner sc = new Scanner(System.in);
    System.out.print("Enter your full name: ");
    String name = sc.nextLine();
    System.out.println("You entered: " + name);

    Input:

    Rahul Sharma

    Output:

    You entered: Rahul Sharma

    👉 Here it captures the whole line, including spaces.

    ⚡ Key Differences Table

    Featurenext()nextLine()
    Reads up toWhitespace (space, tab, newline)End of line (\n)
    Can read spaces?❌ No (stops at space)✅ Yes (includes spaces)
    Best forSingle words/tokensFull sentences / whole line
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