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Clicking the back button twice to exit an activity
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In Java Activity:
boolean doubleBackToExitPressedOnce = false;
@Override
public void onBackPressed() {
if (doubleBackToExitPressedOnce) {
super.onBackPressed();
return;
}
this.doubleBackToExitPres...
How to set timer in android?
...er to clean up your tasks in onPause, saving state if necessary.
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Handler.Callback;
import android.view.View;
import an...
Asynchronous vs Multithreading - Is there a difference?
...the line 4 to execute without waiting for completion of the I/O operation.[Java pgm perspective]
– spiderman
Jul 4 '14 at 18:48
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I don't remember my android debug.keystore password
...your suggestion it gives me error; Enter keystore password: keytool error: java.lang.Exception: Alias <aliasname> does not exist java.lang.Exception: Alias <aliasname> does not exist at sun.security.tools.KeyTool.doPrintEntry(Unknown Source) at sun.security.tools.KeyTool....
RegEx backreferences in IntelliJ
...mation on regular expressions and their syntax, refer to documentation for java.util.regex Back references should have $n, rather than \n format.
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How to define @Value as optional
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If you are using Java 8, you can take advantage of its java.util.Optional class.
You just have to declare the variable following this way:
@Value("${myValue:#{null}}")
private Optional<String> value;
Then, you can check whether the ...
Using Emacs to recursively find and replace in text files not already open
... how do I try to found string "Collectible" in all file with extension java and hxx using findr.el?
– swdev
Jan 25 '11 at 4:57
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Do I need to disable NSLog before release Application?
...vels to limit the performance hit to almost zero! (see cocoa lumberjack or java's log4j
– Daij-Djan
Jan 30 '13 at 16:57
2
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Spring MVC @PathVariable getting truncated
... In Spring 4.2 this is slightly easier to configure. We use Java config classes and extend the WebMvcConfigurationSupport which provides a simple hook:public void configurePathMatch(PathMatchConfigurer configurer) - just override that and set up the path matching how you like.
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Change Author template in Android Studio
...n section, select Includes.
5)Select File Header item that applies to the Java files.
6)You will find an editor section that allow you to edit it for the required pattern. Use the description section below to understand the different parameters that can be used.
/**
* Created by ${USER} on ${DAY}...