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9.5: Displaying Strings

  • Page ID
  • \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)

    You can put as many statements as you like in main. For example, to display more than one line of output:

    public class Hello {
        public static void main(String[] args) {
            // generate some simple output
            System.out.println("Hello, World!"); // first line
            System.out.println("How are you?"); // another line

    Phrases that appear in quotation marks are called strings, because they contain a sequence of “characters” strung together. Characters can be letters, numbers, punctuation marks, symbols, spaces, tabs, etc.

    System.out.println appends a special character, called a newline, that moves to the beginning of the next line. If you don’t want a newline at the end, you can use print instead of println:

    public class Goodbye {
        public static void main(String[] args) {
            System.out.print("Goodbye, ");
            System.out.println("cruel world");

    In this example, the first statement does not add a newline, so the output appears on a single line as Goodbye, cruel world. Notice that there is a space at the end of the first string, which appears in the output.

    This page titled 9.5: Displaying Strings is shared under a CC BY-NC-SA 3.0 license and was authored, remixed, and/or curated by Allen B. Downey (Green Tea Press) .

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