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How to avoid passing parameters everywhere in play2?
...chieve it: through actions composition or by using implicit parameters. In Java I suggest using the Http.Context.args map to store useful values and retrieve them from the templates without having to explicitly pass as templates parameters.
Using implicit parameters
Place the menus parameter at th...
Java: how to initialize String[]?
...
I believe you just migrated from C++, Well in java you have to initialize a data type(other then primitive types and String is not a considered as a primitive type in java ) to use them as according to their specifications if you don't then its just like an empty referen...
Why java.util.Optional is not Serializable, how to serialize the object with such fields
...o serialize object with enums. The other case is where class has fields of java.util.Optional class. In this case the following exception is thrown: java.io.NotSerializableException: java.util.Optional
...
IntelliJ Organize Imports
...e an Organize Imports feature similar to that in Eclipse?
What I have is a Java file with multiple classes missing their imports. Example:
...
Apache Commons equals/hashCode builder [closed]
... .isEquals();
} else{
return false;
}
}
and here with Java 7 or higher (inspired by Guava):
@Override
public int hashCode(){
return Objects.hash(name, length, children);
}
@Override
public boolean equals(final Object obj){
if(obj instanceof Bean){
final Bean ot...
Creating runnable JAR with Gradle
...manifest, but that would be done the same way.
See http://docs.oracle.com/javase/tutorial/deployment/jar/manifestindex.html
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为什么我们程序员写不出好代码？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...在ASCII之前编写的，意味着你要重新转换输入输出。旧的系统通常会计算空格字符，仅仅是为了弄清其在数据库中是干嘛的，这更要进行转换。
程序员做大量的工作来截图、重新格式化等，而过一段时间后，他们可能会花更多...
Cleanest way to build an SQL string in Java
...statement. Also, you can extract bind values in their order using jooq.org/javadoc/latest/org/jooq/Query.html#getBindValues(), or named bind values by their names using jooq.org/javadoc/latest/org/jooq/Query.html#getParams(). My answer just contains a very simplistic example... I'm not sure if this ...
How can I get screen resolution in java?
... have to use the getScreenResolution() method on Toolkit.
Resources :
javadoc - Toolkit.getScreenSize()
Java bug 5100801- Toolkit.getScreenSize() does not return the correct dimension on multimon, linux
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What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
... Demo demo = (Demo) clazz.newInstance();
}
}
As explained in its javadoc, calling Class.forName(String) returns the Class object associated with the class or interface with the given string name i.e. it returns test.Demo.class which is affected to the clazz variable of type Class.
Then, c...