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Lambda expression to convert array/List of String to array/List of Integers
Since Java 8 comes with powerful lambda expressions,
10 Answers
10
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Error “The goal you specified requires a project to execute but there is no POM in this directory” a
...owershell
mkdir MyWebApp
cd MyWebApp
mvn archetype:generate "-DgroupId=com.javan.dev" "-DartifactId=MyWebApp" "-DarchetypeArtifactId=maven-archetype-webapp" "-DinteractiveMode=false"
Note: This is tested only on windows 10 powershell
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What is the MySQL JDBC driver connection string?
...urations and URL correct or wrong using the following code snippet.
import java.sql.Connection;
import java.sql.DriverManager;
public class TestJdbc {
public static void main(String[] args) {
//db name:testdb_version001
//useSSL=false (get rid of MySQL SSL warnings)
S...
Android Studio: how to remove/update the “Created by” comment added to all new classes?
... directly.
2) Select the Templates tab and edit the #parse("File Header.java") line for any template that you desire.
Personally I followed option 1) and made the default header comment a TODO, e.g.
/**
* TODO: Add a class header comment!
*/
These instructions are based on Android Studio ...
Call a function from another file?
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Can't resist to point out the Java like file structure... com.my.example.. kinda pokes into my eyes, though it might be just me.
– 0xc0de
Sep 9 at 8:25
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App Inventor 2 过程块 · App Inventor 2 中文网
...关联的调用块也会自动同步重命名。
过程名称不能使用 Java 关键字。这里列出了 Java 关键字。
创建过程后，App Inventor 会自动生成对应的调用块并放入“过程”抽屉。使用该调用块即可执行过程。
有返回值的过程
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How to send POST request in JSON using HTTPClient in Android?
...m using an example posted by Justin Grammens.
About JSON
JSON stands for JavaScript Object Notation. In JavaScript properties can be referenced both like this object1.name and like this object['name'];. The example from the article uses this bit of JSON.
The Parts
A fan object with email as a ke...
With Spring can I make an optional path variable?
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If you are using Spring 4.1 and Java 8 you can use java.util.Optional which is supported in @RequestParam, @PathVariable, @RequestHeader and @MatrixVariable in Spring MVC -
@RequestMapping(value = {"/json/{type}", "/json" }, method = RequestMethod.GET)
pub...
Detect network connection type on Android
...pe. You can use this code (derived from a @hide method in TelephonyManager.java).
This method returns a String describing the current connection type.
i.e. one of : "WIFI" , "2G" , "3G" , "4G" , "5G" , "-" (not connected) or "?" (unknown)
Remark: This code requires API 25+, but you can easily sup...
How to have the formatter wrap code with IntelliJ?
...rgin is not exceeded" option is in File / Settings / Editor / Code Style / Java / Wrapping and Braces / Keep when reformatting
– Aaron
Jan 3 '16 at 8:11
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