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micro:bit 连接报错 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...，在连上的一瞬间后直接闪退，并且报错了。
运行故障
java.lang.ExceptionInInitializerError at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.subscribeBluetoothLEint.java:357) at
edu.mit.appinventor.ble.BluetoothLEintSBLEReadOperation.run(BluetoothLEint.java:325) at an...
How to write logs in text file when using java.util.logging.Logger
...hrough logging.properties file. And it can be passed as JVM parameter ex : java -Djava.util.logging.config.file=/scratch/user/config/logging.properties
Details: https://docs.oracle.com/cd/E23549_01/doc.1111/e14568/handler.htm
Configuring the File handler
To send logs to a file, add FileHandler to...
How to run Unix shell script from Java code?
It is quite simple to run a Unix command from Java.
17 Answers
17
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Scala equivalent of Java java.lang.Class Object
... System",
val c = new C
val clazz = c.getClass // method from java.lang.Object
val clazz2 = classOf[C] // Scala method: classOf[C] ~ C.class
val methods = clazz.getMethods // method from java.lang.Class<T>
The classOf[T] method returns the runtime representation...
How to iterate through range of Dates in Java?
...n a start and end date.
Please provide me guidance to achieve this using Java.
13 Answers
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Encoding as Base64 in Java
I need to encode some data in the Base64 encoding in Java. How do I do that? What is the name of the class that provides a Base64 encoder?
...
Java Delegates?
Does the Java language have delegate features, similar to how C# has support for delegates?
15 Answers
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How to format a duration in java? (e.g format H:MM:SS)
...duration in seconds using a pattern like H:MM:SS. The current utilities in java are designed to format a time but not a duration.
...
Convert timestamp in milliseconds to string formatted time in Java
... to import SimpleDateFormat, use the import as follows: import java.text.*;
– Naveen Kumar R B
Jan 4 '17 at 11:06
1
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Java project in Eclipse: The type java.lang.Object cannot be resolved. It is indirectly referenced f
... and then. See http://dev-answers.blogspot.de/2009/06/eclipse-build-errors-javalangobject.html for a possible solution, otherwise try the following;
Close the project and reopen it.
Clean the project (It will rebuild the buildpath hence reconfiguring with the JDK libraries)
OR
Delete and Re-impor...