import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(\\$)([^$]+)(\\$)";
final String string = "\\documentclass{article}\n"
+ "%\\usepackage[T1]{fontenc}\n"
+ "%\\usepackage{textcomp}\n"
+ "%\\usepackage[math]{iwona}\n"
+ "\\usepackage[lf,minionint]{MinionPro}\n"
+ "\\usepackage{a4,bm}\n"
+ "%\\usepackage{dotlessj}\n"
+ "\\pagestyle{empty}\n"
+ "\\begin{document}\n"
+ "\\begin{center}\n"
+ "{\\Large{\\bfseries Test of the font {\\scshape MinionPro}.}}\\bigskip\\\\\n"
+ "{\\Large\\verb|\\usepackage[lf,minionint]{MinionPro}|}\n"
+ "%\\medskip\\\\\n"
+ "%{\\verb|\\usepackage[romanfamily=bright-osf]{lucimatx}|} if you want old-style figures (like this: \\oldstylenums{1695})\\\\\n"
+ "\\end{center}\n\n"
+ "The default math mode font is $Math\\ Italic$. This should not be\n"
+ "confused with ordinary \\emph{Text Italic} -- notice the different spacing\\,!\n"
+ "\\verb|\\mathbf| produces bold roman letters: $ \\mathbf{abcABC} $.\n"
+ "If you wish to embolden complete formulas,\n"
+ "use the \\verb|\\boldmath| command \\emph{before} going into math mode. \n"
+ "This changes the default math fonts to bold. \n"
+ " \n"
+ "\\begin{tabular}{ll}\n"
+ "\\texttt{normal} & $ x = 2\\pi \\Rightarrow x \\simeq 6.28 $\\\\\n"
+ "\\texttt{mathbf} & $\\mathbf{x} = 2\\pi \\Rightarrow \\mathbf{x} \\simeq 6.28 $\\\\\n"
+ "\\texttt{boldmath} & {\\boldmath $x = \\mathbf{2}\\pi \\Rightarrow x \n"
+ " \\simeq{\\mathbf{6.28}} $}\\\\\n"
+ "\\end{tabular}\n"
+ "\\smallskip\n\n"
+ "Greek is available in upper and lower case:\n"
+ "$\\alpha,\\beta \\dots \\Omega$, and there are special\n"
+ "symbols such as $ \\hbar$.\n"
+ "%The following letters should be upright: $\\upGamma, \\upDelta\\dots \\upOmega$.\n"
+ "Digits in formulas $1, 2, 3\\dots$ may differ from those in text: 1, 2, 3\\dots\n\n"
+ "There is a calligraphic alphabet \\verb|\\mathcal| for upper case letters\n"
+ "$ \\mathcal{ABCDE}\\dots $.\n"
+ "%and there are letters for number sets: $\\mathbb{A\\dots Z} $, which are produced using \\verb|\\mathbb|.\n\n"
+ "\\noindent\n"
+ "This font has both lining figures (13589, default) and oldstyle figures (\\oldstylenums{13589}, select with {\\tt$\\backslash$oldstylenums\\{..\\}}). \n"
+ "%{\\em \\swshape{I}t \\swshape{A}lso \\swshape{H}as \\swshape{S}wash \\swshape{I}talics} {\\tt$\\backslash$swshape\\{..\\}}\n"
+ "\\\\\n"
+ "{\\fontseries{c}\\selectfont there is also a condensed weight} {\\tt$\\backslash$fontseries\\{c\\}$\\backslash$selectfont}\n"
+ " \n"
+ "\\begin{equation}\n"
+ " \\phi(t)=\\frac{1}{\\sqrt{2\\pi}}\n"
+ " \\int^t_0 e^{-x^2/2} dx \n"
+ "\\end{equation}\n\n"
+ "\\begin{equation}\n"
+ " \\prod_{j\\geq 0}\n"
+ " \\left(\\sum_{k\\geq 0}a_{jk} z^k\\right) \n"
+ "= \\sum_{k\\geq 0} z^n\n"
+ " \\left( \\sum_{{k_0,k_1,\\ldots\\geq 0}\n"
+ " \\atop{k_0+k_1+\\ldots=n} }\n"
+ " a{_0k_0}a_{1k_1}\\ldots \\right) \n"
+ "\\end{equation}\n\n"
+ "\\begin{equation}\n"
+ "\\pi(n) = \\sum_{m=2}^{n}\n"
+ " \\left\\lfloor \\left(\\sum_{k=1}^{m-1}\n"
+ " \\lfloor(m/k)/\\lceil m/k\\rceil \n"
+ " \\rfloor \\right)^{-1}\n"
+ " \\right\\rfloor\n"
+ "\\end{equation}\n\n"
+ "\\begin{equation}\n"
+ "\\{\\underbrace{%\n"
+ " \\overbrace{\\mathstrut a,\\ldots,a}^{k\\ a's},\n"
+ " \\overbrace{\\mathstrut b,\\ldots,b}^{l\\ b's}}\n"
+ " _{k+1\\ \\mathrm{elements}} \\}\n"
+ "\\end{equation}\n\n"
+ "\\begin{displaymath}\n"
+ "\\mbox{W}^+\\\n"
+ "\\begin{array}{l}\n"
+ "\\nearrow\\raise5pt\\hbox{$\\mu^+ + \\nu_{\\mu}$}\\\\\n"
+ "\\rightarrow \\pi^+ +\\pi^0 \\\\[5pt]\n"
+ "\\rightarrow \\kappa^+ +\\pi^0 \\\\\n"
+ "\\searrow\\lower5pt\\hbox{$\\mathrm{e}^+ \n"
+ " +\\nu_{\\scriptstyle\\mathrm{e}}$}\n"
+ "\\end{array}\n"
+ "\\end{displaymath}\n\n"
+ "\\begin{displaymath}\n"
+ "\\frac{\\pm\n"
+ "\\left|\\begin{array}{ccc}\n"
+ "x_1-x_2 & y_1-y_2 & z_1-z_2 \\\\\n"
+ "l_1 & m_1 & n_1 \\\\\n"
+ "l_2 & m_2 & n_2\n"
+ "\\end{array}\\right|}{\n"
+ "\\sqrt{\\left|\\begin{array}{cc}l_1&m_1\\\\\n"
+ "l_2&m_2\\end{array}\\right|^2\n"
+ "+ \\left|\\begin{array}{cc}m_1&n_1\\\\\n"
+ "n_1&l_1\\end{array}\\right|^2\n"
+ "+ \\left|\\begin{array}{cc}m_2&n_2\\\\\n"
+ "n_2&l_2\\end{array}\\right|^2}}\n"
+ "\\end{displaymath}\n\n"
+ "text accents: \\`{a},\\'{a},\\\"{a},\\^{a}\n"
+ "may differ from math accents:\n"
+ "\\begin{displaymath}\n"
+ "\\mbox{ acute=}\\acute{a}\n"
+ "\\mbox{ grave=}\\grave{a}\n"
+ "\\mbox{ ddot=}\\ddot {a}\n"
+ "\\mbox{ tilde=}\\tilde{a}\n"
+ "\\mbox{ bar=}\\bar {a}\n"
+ "\\mbox{ breve=}\\breve{a}\n"
+ "\\mbox{ check=}\\check{a}\n"
+ "\\mbox{ hat=}\\hat {a}\n"
+ "\\mbox{ vec=}\\vec {a}\n"
+ "\\mbox{ dot=}\\dot {a}\n"
+ "\\end{displaymath}\n\n"
+ "dotlessi=\\i\\ \n"
+ "dotlessj=\\j\\ \n"
+ "dagger=$\\dagger$\\ \\ \\ \n"
+ "\\verb|\\bm{x}|\\ $\\bm{x}$ \n\n"
+ "%$\\hbar$ $\\hslash$\n"
+ "\\end{document}\n";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
final Matcher matcher = pattern.matcher(string);
while (matcher.find()) {
System.out.println("Full match: " + matcher.group(0));
for (int i = 1; i <= matcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + matcher.group(i));
}
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html