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This article is about how to implement system storage in Java. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

1. Save the data

Btn_ok.setOnClickListener (new OnClickListener () {

@ Override

Publicvoid onClick (View v) {

String user = et_user.getText (). ToString (). Trim ()

String pwd = et_pwd.getText (). ToString (). Trim ()

If (user.isEmpty () | | pwd.isEmpty ()) {

Toast.makeText (getApplicationContext (), "cannot be empty", 200). Show ()

} else {

String name= "data.txt"

Stringcontent=user+ "=" + pwd

/ / StringBuffer sb = newStringBuffer ()

String content = sb.append (userName) .append ("=") .append (password) .append ()

Try {

FileOutputStream fos=openFileOutput (name, MODE_PRIVATE)

Fos.write (content.getBytes ())

Fos.close ()

Toast.makeText (getApplicationContext (), "saved successfully", 200. show ()

} catch (Exception e) {

/ / TODO Auto-generated catch block

E.printStackTrace ()

}

}

}

});

Data reading of 1pc2 data

Btn_show.setOnClickListener (new OnClickListener () {

@ Override

Publicvoid onClick (View v) {

String name= "data.txt"

Try {

FileInputStream fis=openFileInput (name)

BufferedReaderbr=new BufferedReader (new InputStreamReader (fis))

/ / read the data of the document

String content = br.readLine ()

/ / split string

String [] strs = content.split ("=")

/ / displayed data

If (! content.isEmpty ()) {

Et_user.setText (strs [0])

Et_pwd.setText (strs [1])

}

} catch (Exception e) {

/ / TODO Auto-generated catch block

E.printStackTrace ()

}

}

});

Thank you for reading! This is the end of the article on "how to achieve system storage in Java". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!

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