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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
... arrives. Instead of implementing the event listeners with the traditional Java programming in Android, programmers can simply accomplish this by dragging a block and adding corresponding actions they want when a specific event occurs.
Unlike the traditional text-based programming, MIT App Inventor...
How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
... - the ToUpper method
doesn't turn ß into SS.
For example this works in Java (and even in Javascript), given string that is in Normal Form C:
//Poor man's case folding.
//There are some edge cases where this doesn't work
public static String toCaseFold( String input, Locale cultureInfo ) {
r...
Why is printing “B” dramatically slower than printing “#”?
...
I performed tests on Eclipse vs Netbeans 8.0.2, both with Java version 1.8;
I used System.nanoTime() for measurements.
Eclipse:
I got the same time on both cases - around 1.564 seconds.
Netbeans:
Using "#": 1.536 seconds
Using "B": 44.164 seconds
So, it looks like Netbeans has bad...
Eclipse secure storage
...
In windows 7 enerprise 64 bits + java 8
In eclipse go to :
Preferences
--> General
-> security
-> secure Storage.
In master Password providers UNCKECK Windows integration (64 bits)
Then go to General -- network connectio...
asynchronous vs non-blocking
...
Putting this question in the context of NIO and NIO.2 in java 7, async IO is one step more advanced than non-blocking.
With java NIO non-blocking calls, one would set all channels (SocketChannel, ServerSocketChannel, FileChannel, etc) as such by calling AbstractSelectableChannel.co...
Why does (0 < 5 < 3) return true?
...
Order of operations causes (0 < 5 < 3) to be interpreted in javascript as ((0 < 5) < 3) which produces (true < 3) and true is counted as 1, causing it to return true.
This is also why (0 < 5 < 1) returns false, (0 < 5) returns true, which is interpreted as 1, result...
How to sign an android apk file
...t to sign your unsigned apk.
Use the keytool provided by the JDK found in %JAVA_HOME%/bin/
keytool -genkey -v -keystore my.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias app
Step 2 or 4: Zipalign
zipalign which is a tool provided by the Android SDK found in e.g. %ANDROID_HOME%/sdk/bui...
Spring Data JPA - “No Property Found for Type” Exception
...ittle effort.
For example, if the managed entity has a name field (and the Java Bean standard getter and setter for that field), defining the findByName method in the DAO interface will automatically generate the correct query:
public interface IFooDAO extends JpaRepository< Foo, Long >{
...
Android Studio suddenly cannot resolve symbols
...when android studios 0.8.2 was loading and it will not recognise any of my java imports and everything was just red. This worked for me, thanks!
– Simon
Nov 8 '14 at 17:50
2
...
Why do I need Transaction in Hibernate for read-only operations?
...lls of read-only flag in Transactional annotation - ibm.com/developerworks/java/library/j-ts1/index.html.
– Mahesh
Jun 4 '17 at 16:42
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