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How to wait for a number of threads to complete?
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The book “Effective Java” recommends avoiding thread groups (item 73).
– Bastien Léonard
Aug 9 '09 at 20:47
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Failed to locate the winutils binary in the hadoop binary path
...OOP_HOME to extracted directory [path], but also provide system property -Djava.library.path=[path]\bin to load native libs (dll).
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How to convert String to Long in Kotlin?
...o number conversion.
public inline fun String.toLong(radix: Int): Long = java.lang.Long.parseLong(this, checkRadix(radix))
4. string.toLongOrNull(10)
Parses the string as a [Long] number and returns the result or null
if the string is not a valid representation of a number.
@throws I...
Parsing JSON array into java.util.List with Gson
...tring> and then parse the JSON array into that Type, like this:
import java.lang.reflect.Type;
import com.google.gson.reflect.TypeToken;
JsonElement yourJson = mapping.get("servers");
Type listType = new TypeToken<List<String>>() {}.getType();
List<String> yourList = new Gson...
Accept server's self-signed ssl certificate in Java client
...and import it in your JVM truststore (to establish a chain of trust):
<JAVA_HOME>\bin\keytool -import -v -trustcacerts
-alias server-alias -file server.cer
-keystore cacerts.jks -keypass changeit
-storepass changeit
Option 2
Disable Certificate Validation:
// Create a trust manager that ...
Difference between the Apache HTTP Server and Apache Tomcat? [closed]
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Apache Tomcat is used to deploy your Java Servlets and JSPs. So in your Java project you can build your WAR (short for Web ARchive) file, and just drop it in the deploy directory in Tomcat.
So basically Apache is an HTTP Server, serving HTTP. Tomcat is a Servle...
Manipulating an Access database from Java without ODBC
...nt to manipulate a Microsoft Access database (.accdb or .mdb file) from my Java project. I don't want to use the JDBC-ODBC Bridge and the Access ODBC driver from Microsoft because:
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Facebook Architecture [closed]
...l for that many people who are building NEW PHP apps.
There's also PHP to JAVA via things like Resin/Quercus. Again, it doesn't support everything...
Another thing to note is that if you use any non-standard PHP module, you aren't going to be able to convert that code to C++ or Java either. Howeve...
Maven compile with multiple src directories
Is there a way to compile multiple java source directories in a single maven project?
10 Answers
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How to download and save a file from Internet using Java?
... line-by-line, but is there a way to just download and save the file using Java?
21 Answers
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