#Java - Code Snippets for '#Pattern'

#Java - Code Snippets for '#Pattern' - 8 code snippet(s) found

Sample 1. Example of Factory Class

public final class EmployeeFactory {



   private Employee svEmp;

   

   public EmployeeFactory(String type){

      if( type.equals("Manager")){

         svEmp = new Manager();

      } else if(type.equals("Developer")){

         svEmp = new Developer();

      } else if(type.equals("QA")){

         svEmp = new QA();

      }

   }

   

   public Employee getFactoryProduct() {

      return svEmp;

   }

   

}

_{Like Feedback factory design pattern factory class final class composition}

Sample 2. Code to find email ids in a string using Pattern.

String text="vivek boy goy vivek@tech.com viv@ek.com sdjs@adjk";

Pattern regex = Pattern.compile("[@]");

Matcher regexMatcher = regex.matcher(text);

int i =0;

int width = 0;

while (regexMatcher.find()) {

     if((regexMatcher.start()-10 > 0) && (regexMatcher.end()+10 < text.length())){

          width=10;

       String[]    substr=text.substring(regexMatcher.start()-width,regexMatcher.end()+width).split(" ");

           for(int j=0;j<substr.length;j++){

                   if(substr[j].contains("@") && (substr[j].contains(".com") ||    substr[j].contains(".net"))){

                                System.out.println(substr[j]);

                           }                

                     }

               } else {

               width=0;

        }

 }

_{Like Feedback regex pattern string regexMatcher.find java.util.regex.Matcher java.util.regex.Pattern}

Sample 3. Java Code to get all images url from html code.

regex = Pattern.compile("[http]");

regexMatcher = regex.matcher(htmlParseData.getHtml());

List tr=htmlParseData.getOutgoingUrls();                       

imgUrlCounter=0;

for(i=0;i<tr.size();i++){

          if(tr.get(i).toString().contains(".jpg") || tr.get(i).toString().contains(".jpeg") || tr.get(i).toString().contains(".gif") || tr.get(i).toString().contains(".bmp")){

                   url = new URL(tr.get(i).toString());  

                   Image image = new ImageIcon(url).getImage();

           }

 }

_{Like Feedback regex pattern regex.matcher html java.util.regex.pattern regular expressions}

Sample 4. Method to check if the WebUrl matches a Pattern.

public boolean shouldVisit(WebURL url) {

   Pattern filters = Pattern.compile(".*(.(htm|html))$");   



   String href = url.getURL().toLowerCase();

   if(filters.matcher(href).matches()){

      return true;

   } 

   return false;

}

_{Like Feedback weburl patternmatching .getURL() pattern pattern.matcher pattern.matcher.matches regex regular expression}

Sample 5. Initialize object using Builder Pattern

public class Employee {

     public String name;

     public int age;

     public int salary;



     Employee withName(String name){

        this.name = name;

        return this;

     }



     Employee withAge(int age){

        this.age = age;

        return this;

     }



     Employee withSalary(int salary){

        this.salary = salary;

        return this;

     }

}





public class BuilderPatternTest {

     public static void main(String[] args) {

          Employee employee = new Employee().withName("John").withAge(25).withSalary(10000);

     }

}

_{Like Feedback builder design pattern builder pattern}

Sample 6. Get Number of instances a pattern exist in the text

public int getNoOfQuestions(){    

       Pattern p = Pattern.compile("Ans.");

        Matcher m = p.matcher(text);

        int count = 0;

        while (m.find()){

           count = count + 1;

        }

        return count-3;      

    }

_{Like Feedback pattern matching Pattern Matcher Matcher.find}

Sample 7. Code Sample / Example / Snippet of java.util.regex.Pattern

    private long getStoreId(File storeFile) {

        Pattern p = Pattern.compile(m_name + "-(\d+)");

        Matcher m = p.matcher(storeFile.getName());

        if (m.find()) {

            return Long.parseLong(m.group(1));

        }

        throw new RuntimeException("Invalid store file name: " + storeFile.getName());

    }

_{Like Feedback java.util.regex.Pattern}

Sample 8. Usage of Builder Class / Builder Pattern

public class BuggyBread {



   private String element1; // Make them private as it supports stronger encapsulation



   private String element2;



   private BuggyBread(String element1, String element2){ // Make it private so that it can only be used by Builder

      this.element1 = element1;

      this.element2 = element2;

   }



   public static class Builder { 

      // Create Builder as nested class as its only supposed to Build BuggyBread objects, 

      // Make it public so that it can be accessed from outside

      private String element1; // Make them private as it supports stronger encapsulation



      private String element2;



      Builder(){}; // We have to define this constructor if we need overloaded constructor too and need to initialize without arguments too



      Builder(BuggyBread buggybread){ // overloaded constructor to make things easy

         element1 = buggybread.element1;

         element2 = buggybread.element2;

      }



      Builder withElement1(String element1){ // Builder method to either populate elements or override ( if populated through overloaded constructor )

         this.element1 = element1;

         return this;

      }



      Builder withElement2(String element2){

         this.element2 = element2;

         return this;

      }



      BuggyBread build(){ // method to build BuggyBread object using final contents from Builder

         BuggyBread buggybread = new BuggyBread(element1,element2);

         return buggybread;

      }

   }

}

_{Like Feedback builder pattern builder class}

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