import java.io.IOException;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class GetDefaultBrowser {
public static void main(String[] args) {
System.out.println(new GetDefaultBrowser().getDefaultBrowser());
}
public String getDefaultBrowser() {
String defaultBrowser = "";
try {
//1. Find the default browser in registry
String browser = "";
Process process0 = Runtime.getRuntime().exec("REG QUERY HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\Shell\\Associations\\UrlAssociations\\http\\UserChoice");
Scanner kb = new Scanner(process0.getInputStream());
while(kb.hasNextLine()){
String line = kb.nextLine();
if (line.toUpperCase().indexOf("PROGID")>=0){
String[] elements = line.split(" ");
browser = elements[elements.length-1];
System.out.println(browser);
}
}
//2. Get the default browser path from registry
Process process = Runtime.getRuntime().exec("REG QUERY HKEY_CLASSES_ROOT\\"+browser+"\\shell\\open\\command");
kb = new Scanner(process.getInputStream());
while (kb.hasNextLine()) {
String registry = (kb.nextLine()).replaceAll("\\\\", "/").trim();
if (registry.indexOf("Default") < 0){
continue;
}
int fidx = registry.indexOf("\"");
int lidx = registry.indexOf("exe");
if (fidx > 0 && lidx > 0) {
defaultBrowser = registry.substring(fidx+1, lidx+3);
Runtime.getRuntime().exec(defaultBrowser +
" file:///C:/MyFiles/GreatJouney.htm#T01_FLORIDA");
break;
}
}
kb.close();
} catch (IOException e) {
e.printStackTrace();
}
return defaultBrowser;
}
}
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