Using Code Template for Reusable codes in Jdeveloper IDE

Jdeveloper IDE comes with lots of features and one of them is Code Template, Code Template means some saved code that can be used using a shortcut key anywhere in editor.
There are many preconfigured templates for e.g.
Type sop in editor and press ctrl+enter and IDE will write

System.out.println();

Type main in editor and press ctrl+enter and IDE will write

    public static void main(String[] args) {
        ;
    }

Configure ADF Skin in Jdeveloper 11.1.1.7

In Jdeveloper 11.1.1.7 there is no option to create ADF Skin declaratively
In order to apply skin we have to create a simple CSS file and then configure application to use this CSS file as skin. Jdeveloper doesn't do this for us :( we have to do it manually

So first step is to enable Skin Selectors for ADF Faces, Without enabling this CSS editor doesn't show ADF Faces component tags
CSS files by default supports HTML tags  only

Go to Tools > Preferences > CSS Editor and set CSS level to level 3 and check the box to support ADF Faces Components

Allow user input in Jdeveloper for Java applications, Using Java Scanner Class to take input from console

Sometimes we have to take input from Keyboard when we use Scanner or BufferedReader class.
and to take input from Jdeveloper we have to change a setting to allow user input in Jdeveloper.

Let's take an example of java.util.Scanner class-

package client;

import java.util.Scanner;

public class UserInput {
    public UserInput() {
        super();
    }

    public static void main(String[] args) {
        System.out.println("Please Enter your Name-");
        Scanner sc = new Scanner(System.in);
        String name = sc.next();
        System.out.println("Your Name is " + name);
    }

}

Jdeveloper installation folder size increasing beyond limit , Reason was hprof (Heap Profiling) files

Recently i faced a problem, i was lacking space on my C drive so  checked all directories and found that the size of Jdeveloper 12.1.3 installation folder Oracle-->Middleware  was approx 30 GB . This is not expected as Jdev. takes approx 1.5 to 2 GB space only

Then i found some java_pidXXXX.hprof file that was taking lot of space in this folder

Download file from url using Oracle ADF & Java- Download Manager

In this tutorial i will show you how to download a file from its url (web)-
as- http://www.tutorialspoint.com/java/java_tutorial.pdf
This will work as a simple download manager, you can add file url to download it and save it.
This tutorial makes use of FileHandling and java.net.URL class in java.

• User Interface is very simple to design as it have only one input text and one button, so create a fusion web application , and a bounded taskflow with a page fragment in it
• Now drag a Input text to enter url and a button to perform action on it from Componenet palette .
• Bind input text to bean to get its value from page



 private RichInputText fileUrlBind;

    public void setFileUrlBind(RichInputText fileUrlBind) {
        this.fileUrlBind = fileUrlBind;
    }

    public RichInputText getFileUrlBind() {
        return fileUrlBind;
    }

• Now create actionListener to managed bean and write code for downloading file from given url- see code



    public void DownloadFileButton(ActionEvent actionEvent) {
        try {
            if (fileUrlBind.getValue() != null) {
                String fileUrl = fileUrlBind.getValue().toString();
                if (fileUrl.startsWith("http://")) {
                    String msgNm = fileUrl.substring(7);

                    cnctmsgBind.setValue("Connecting to " + msgNm + "....");

                    URL url = new URL(fileUrl);
                    url.openConnection();
                    InputStream reader = url.openStream();


                    FileOutputStream writer =
                        new FileOutputStream("C:/javadrive." + fileUrl.substring(fileUrl.lastIndexOf(".")));
                    byte[] buffer = new byte[153600];
                    int totalBytesRead = 0;
                    int bytesRead = 0;

                   
                    dwnldMsgBind.setValue("Reading file 150KB blocks at a time");
                    while ((bytesRead = reader.read(buffer)) > 0) {
                        writer.write(buffer, 0, bytesRead);
                        buffer = new byte[153600];
                        totalBytesRead += bytesRead;
                    }
                 
                    alerMsgBind.setValue("File is downloaded successfully, look at your c drive :-)");
                    writer.close();
                    reader.close();
                } else {
                    FacesMessage errMsg = new FacesMessage("Something went wrong");
                    errMsg.setSeverity(FacesMessage.SEVERITY_ERROR);
                    errMsg.setDetail("Example- http://www.javadrive.co.in/java.pdf");
                    FacesContext context = FacesContext.getCurrentInstance();
                    context.addMessage(fileUrlBind.getClientId(), errMsg);
                }
            }
        } catch (MalformedURLException e) {
            FacesMessage errMsg = new FacesMessage("Something went wrong");
            errMsg.setSeverity(FacesMessage.SEVERITY_ERROR);
            FacesContext context = FacesContext.getCurrentInstance();
            context.addMessage(null, errMsg);
            e.printStackTrace();
        } catch (IOException e) {
            FacesMessage errMsg = new FacesMessage("Something went wrong");
            errMsg.setSeverity(FacesMessage.SEVERITY_ERROR);
            FacesContext context = FacesContext.getCurrentInstance();
            context.addMessage(null, errMsg);
            e.printStackTrace();
        }


    }






• Now Run your application and see downloaded file in your c drive as path is hard coded in bean

•  See your downloaded file in c drive

 

•  Download Sample Application- Happy Coding Sample ADF Application

Fun - Develop Tic Tac Toe game in Oracle ADF/Java

Tic Tac Toe or Naughty Cross is a paper-pencil game for two players and simple in  concept.
I have developed a application on ADF, using JSF page and unbounded adfc-config.xml .
There is nothing to explain, see the sample application at bottom of this post

• Tic Tac Toe game has 9 square to enter values 0 or X, so for that i have used 9 buttons and images of 0 and X

• And create a managed bean for all nine buttons, to execute proper conditions for each move
   
• See managed bean code and conditions for player's move(only Java Code is needed to do this)





package ticTacToeADF.view;

import javax.faces.event.ActionEvent;

import oracle.adf.view.rich.component.rich.nav.RichCommandButton;

public class TictactoeBean {

    public TictactoeBean() {
    }
    private static String one = "     ";
    private static String two = "     ";
    private static String three = "     ";
    private static String four = "     ";
    private static String five = "     ";
    private static String six = "     ";
    private static String seven = "     ";
    private static String eight = "     ";
    private static String nine = "     ";
    private static boolean check = false;
    private String Result = "";
    private static boolean oneDis = false;
    private static boolean twoDis = false;
    private static boolean threeDis = false;
    private static boolean fourDis = false;
    private static boolean fiveDis = false;
    private static boolean sixDis = false;
    private static boolean sevenDis = false;
    private static boolean eightDis = false;
    private static boolean nineDis = false;


    public void Button1(ActionEvent actionEvent) {
        if (check == false) {
            this.setOne("X");

            check = true;
            this.setOneDis(true);
            System.out.println("Check is--------->" + check);
            if (one.equalsIgnoreCase(two) && two.equalsIgnoreCase(three)) {
                this.setResult(one + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (one.equalsIgnoreCase(five) && five.equalsIgnoreCase(nine)) {
                this.setResult(one + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (one.equalsIgnoreCase(four) && four.equalsIgnoreCase(seven)) {
                this.setResult(one + " wins");
                finishgame();
                System.out.println("One wins");
            }


        } else {
            this.setOne("0");

            check = false;
            this.setOneDis(true);
            System.out.println("Check is--------->" + check);
            if (one.equalsIgnoreCase(two) && two.equalsIgnoreCase(three)) {
                this.setResult(one + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (one.equalsIgnoreCase(five) && five.equalsIgnoreCase(nine)) {
                this.setResult(one + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (one.equalsIgnoreCase(four) && four.equalsIgnoreCase(seven)) {
                this.setResult(one + " wins");
                finishgame();
                System.out.println("One wins");
            }

        }

    }

    public void Button2(ActionEvent actionEvent) {
        if (check == false) {
            this.setTwo("X");
            check = true;
            this.setTwoDis(true);
            System.out.println("Check is--------->" + check);
            if (two.equalsIgnoreCase(five) && five.equalsIgnoreCase(eight)) {
                this.setResult(two + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (two.equalsIgnoreCase(one) && one.equalsIgnoreCase(three)) {
                this.setResult(two + " wins");
                finishgame();
                System.out.println("One wins");
            }
        } else {
            this.setTwo("0");
            check = false;
            this.setTwoDis(true);
            System.out.println("Check is--------->" + check);
            if (two.equalsIgnoreCase(five) && five.equalsIgnoreCase(eight)) {
                this.setResult(two + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (two.equalsIgnoreCase(one) && one.equalsIgnoreCase(three)) {
                this.setResult(two + " wins");
                finishgame();
                System.out.println("One wins");
            }
        }
    }

    public void Button3(ActionEvent actionEvent) {
        if (check == false) {
            this.setThree("X");
            check = true;
            this.setThreeDis(true);
            System.out.println("Check is--------->" + check);

            if (three.equalsIgnoreCase(six) && six.equalsIgnoreCase(nine)) {
                this.setResult(three + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(five) && five.equalsIgnoreCase(seven)) {
                this.setResult(three + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(one) && one.equalsIgnoreCase(two)) {
                this.setResult(three + " wins");
                finishgame();
                System.out.println("One wins");
            }

        } else {
            this.setThree("0");
            check = false;
            this.setThreeDis(true);
            System.out.println("Check is--------->" + check);

            if (three.equalsIgnoreCase(six) && six.equalsIgnoreCase(nine)) {
                this.setResult(three + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(five) && five.equalsIgnoreCase(seven)) {
                this.setResult(three + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(one) && one.equalsIgnoreCase(two)) {
                this.setResult(three + " wins");
                finishgame();
                System.out.println("One wins");
            }
        }
    }

    public void Button4(ActionEvent actionEvent) {
        if (check == false) {
            this.setFour("X");
            check = true;
            this.setFourDis(true);
            System.out.println("Check is--------->" + check);

            if (four.equalsIgnoreCase(one) && one.equalsIgnoreCase(seven)) {
                this.setResult(four + " wins");
                finishgame();
                System.out.println("four wins");
            } else if (four.equalsIgnoreCase(five) && five.equalsIgnoreCase(six)) {
                this.setResult(four + " wins");
                finishgame();
                System.out.println("One wins");
            }

        } else {
            this.setFour("0");
            check = false;
            this.setFourDis(true);
            System.out.println("Check is--------->" + check);

            if (four.equalsIgnoreCase(one) && one.equalsIgnoreCase(seven)) {
                this.setResult(four + " wins");
                finishgame();
                System.out.println("four wins");
            } else if (four.equalsIgnoreCase(five) && five.equalsIgnoreCase(six)) {
                this.setResult(four + " wins");
                finishgame();
                System.out.println("One wins");
            }
        }
    }

    public void Button5(ActionEvent actionEvent) {
        if (check == false) {
            this.setFive("X");
            check = true;
            this.setFiveDis(true);
            System.out.println("Check is--------->" + check);

            if (one.equalsIgnoreCase(five) && five.equalsIgnoreCase(nine)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");

            } else if (two.equalsIgnoreCase(five) && five.equalsIgnoreCase(eight)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");
            }

            else if (four.equalsIgnoreCase(five) && five.equalsIgnoreCase(six)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (five.equalsIgnoreCase(three) && three.equalsIgnoreCase(seven)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");
            }
        } else {
            this.setFive("0");
            check = false;
            this.setFiveDis(true);
            System.out.println("Check is--------->" + check);

            if (one.equalsIgnoreCase(five) && five.equalsIgnoreCase(nine)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");

            } else if (two.equalsIgnoreCase(five) && five.equalsIgnoreCase(eight)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");
            }

            else if (four.equalsIgnoreCase(five) && five.equalsIgnoreCase(six)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (five.equalsIgnoreCase(three) && three.equalsIgnoreCase(seven)) {
                this.setResult(five + " wins");
                finishgame();
                System.out.println("One wins");
            }

        }
    }

    public void Button6(ActionEvent actionEvent) {
        if (check == false) {
            this.setSix("X");
            check = true;
            this.setSixDis(true);
            System.out.println("Check is--------->" + check);

            if (four.equalsIgnoreCase(five) && five.equalsIgnoreCase(six)) {
                this.setResult(six + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(six) && six.equalsIgnoreCase(nine)) {
                this.setResult(six + " wins");
                finishgame();
                System.out.println("One wins");
            }
        } else {
            this.setSix("0");
            check = false;
            this.setSixDis(true);
            System.out.println("Check is--------->" + check);

            if (four.equalsIgnoreCase(five) && five.equalsIgnoreCase(six)) {
                this.setResult(six + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(six) && six.equalsIgnoreCase(nine)) {
                this.setResult(six + " wins");
                finishgame();
                System.out.println("One wins");
            }
        }
    }

    public void Button7(ActionEvent actionEvent) {
        if (check == false) {
            this.setSeven("X");
            check = true;
            this.setSevenDis(true);
            System.out.println("Check is--------->" + check);

            if (four.equalsIgnoreCase(one) && one.equalsIgnoreCase(seven)) {
                this.setResult(four + " wins");
                finishgame();
                System.out.println("four wins");
            } else if (five.equalsIgnoreCase(three) && three.equalsIgnoreCase(seven)) {
                this.setResult(seven + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (seven.equalsIgnoreCase(eight) && eight.equalsIgnoreCase(nine)) {
                this.setResult(seven + " wins");
                finishgame();
                System.out.println("One wins");
            }
        } else {
            this.setSeven("0");
            check = false;
            this.setSevenDis(true);
            System.out.println("Check is--------->" + check);
            if (four.equalsIgnoreCase(one) && one.equalsIgnoreCase(seven)) {
                this.setResult(four + " wins");
                finishgame();
                System.out.println("four wins");
            } else if (five.equalsIgnoreCase(three) && three.equalsIgnoreCase(seven)) {
                this.setResult(seven + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (seven.equalsIgnoreCase(eight) && eight.equalsIgnoreCase(nine)) {
                this.setResult(seven + " wins");
                finishgame();
                System.out.println("One wins");
            }
        }
    }

    public void Button8(ActionEvent actionEvent) {
        if (check == false) {
            this.setEight("X");
            check = true;
            this.setEightDis(true);
            System.out.println("Check is--------->" + check);
            if (eight.equalsIgnoreCase(two) && two.equalsIgnoreCase(five)) {
                this.setResult(eight + " wins");
                finishgame();
                System.out.println("four wins");
            } else if (eight.equalsIgnoreCase(seven) && seven.equalsIgnoreCase(nine)) {
                this.setResult(eight + " wins");
                finishgame();
                System.out.println("One wins");

            }
        } else {
            this.setEight("0");
            check = false;
            this.setEightDis(true);
            System.out.println("Check is--------->" + check);
            if (eight.equalsIgnoreCase(two) && two.equalsIgnoreCase(five)) {
                this.setResult(eight + " wins");
                finishgame();
                System.out.println("four wins");
            } else if (eight.equalsIgnoreCase(seven) && seven.equalsIgnoreCase(nine)) {
                this.setResult(eight + " wins");
                finishgame();
                System.out.println("One wins");

            }
        }
    }

    public void Button9(ActionEvent actionEvent) {
        if (check == false) {
            this.setNine("X");
            check = true;
            this.setNineDis(true);
            System.out.println("Check is--------->" + check);
            if (nine.equalsIgnoreCase(one) && one.equalsIgnoreCase(five)) {
                this.setResult(nine + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(six) && six.equalsIgnoreCase(nine)) {
                this.setResult(six + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (eight.equalsIgnoreCase(seven) && seven.equalsIgnoreCase(nine)) {
                this.setResult(eight + " wins");
                finishgame();
                System.out.println("One wins");

            }
        } else {
            this.setNine("0");
            check = false;
            this.setNineDis(true);
            System.out.println("Check is--------->" + check);

            if (nine.equalsIgnoreCase(one) && one.equalsIgnoreCase(five)) {
                this.setResult(nine + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (three.equalsIgnoreCase(six) && six.equalsIgnoreCase(nine)) {
                this.setResult(six + " wins");
                finishgame();
                System.out.println("One wins");
            } else if (eight.equalsIgnoreCase(seven) && seven.equalsIgnoreCase(nine)) {
                this.setResult(eight + " wins");
                finishgame();
                System.out.println("One wins");

            }
        }
    }

    public void setOne(String one) {
        this.one = one;
    }

    public String getOne() {
        return one;
    }

    public void setTwo(String two) {
        this.two = two;
    }

    public String getTwo() {
        return two;
    }

    public void setThree(String three) {
        this.three = three;
    }

    public String getThree() {
        return three;
    }

    public void setFour(String four) {
        this.four = four;
    }

    public String getFour() {
        return four;
    }

    public void setFive(String five) {
        this.five = five;
    }

    public String getFive() {
        return five;
    }

    public void setSix(String six) {
        this.six = six;
    }

    public String getSix() {
        return six;
    }

    public void setSeven(String seven) {
        this.seven = seven;
    }

    public String getSeven() {
        return seven;
    }

    public void setEight(String eight) {
        this.eight = eight;
    }

    public String getEight() {
        return eight;
    }

    public void setNine(String nine) {
        this.nine = nine;
    }

    public String getNine() {
        return nine;
    }

    public void setResult(String Result) {
        this.Result = Result;
    }

    public String getResult() {
        return Result;
    }

    public void ResetButton(ActionEvent actionEvent) {
        this.one = "     ";
        this.two = "     ";
        this.three = "     ";
        this.four = "     ";
        this.five = "     ";
        this.six = "     ";
        this.seven = "     ";
        this.eight = "     ";
        this.nine = "     ";
        this.check = false;
        this.oneDis = false;
        this.twoDis = false;
        this.threeDis = false;
        this.fourDis = false;
        this.fiveDis = false;
        this.sixDis = false;
        this.sevenDis = false;
        this.eightDis = false;
        this.nineDis = false;

    }

    public void finishgame() {
        this.oneDis = true;
        this.twoDis = true;
        this.threeDis = true;
        this.fourDis = true;
        this.fiveDis = true;
        this.sixDis = true;
        this.sevenDis = true;
        this.eightDis = true;
        this.nineDis = true;
    }

    public void setOneDis(boolean oneDis) {
        this.oneDis = oneDis;
    }

    public boolean isOneDis() {
        return oneDis;
    }

    public void setTwoDis(boolean twoDis) {
        this.twoDis = twoDis;
    }

    public boolean isTwoDis() {
        return twoDis;
    }

    public void setThreeDis(boolean threeDis) {
        this.threeDis = threeDis;
    }

    public boolean isThreeDis() {
        return threeDis;
    }

    public void setFourDis(boolean fourDis) {
        this.fourDis = fourDis;
    }

    public boolean isFourDis() {
        return fourDis;
    }

    public void setFiveDis(boolean fiveDis) {
        this.fiveDis = fiveDis;
    }

    public boolean isFiveDis() {
        return fiveDis;
    }

    public void setSixDis(boolean sixDis) {
        this.sixDis = sixDis;
    }

    public boolean isSixDis() {
        return sixDis;
    }

    public void setSevenDis(boolean sevenDis) {
        this.sevenDis = sevenDis;
    }

    public boolean isSevenDis() {
        return sevenDis;
    }

    public void setEightDis(boolean eightDis) {
        this.eightDis = eightDis;
    }

    public boolean isEightDis() {
        return eightDis;
    }

    public void setNineDis(boolean nineDis) {
        this.nineDis = nineDis;
    }

    public boolean isNineDis() {
        return nineDis;
    }


}



• Download and Run this sample application-Sample ADF Application