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converting Java bitmap to byte array
When I look at the buffer after the call to copyPixelsToBuffer the bytes are all 0... The bitmap returned from the camera is immutable... but that shouldn't matter since it's doing a copy.
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How to install Maven 3 on Ubuntu 18.04/17.04/16.10/16.04 LTS/15.10/15.04/14.10/14.04 LTS/13.10/13.04
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为何谷歌不可复制？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...品公司——它拥有搜索、浏览器、邮箱产品以及移动操作系统安卓……
但在所谓新「谷歌」Alphabet的架构下，谷歌向世人展示了自己的“另一面”，比如研究延长人类寿命的子公司Calico、提供高速光纤网络的谷歌Fiber、专注智能...
Date format Mapping to JSON Jackson
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Is it just as easy to use Java 8 LocalDateTime or ZonedDateTime instead of Date? Since Date is basically deprecated (or at least many of its methods), I would like to use those alternatives.
– houcros
Nov 24 '16 ...
Adding two Java 8 streams, or an extra element to a stream
...bly of little or no help whatsoever, but I did a forensics analysis of the Java Lambda Mailing list to see if I could find the cause of this design. This is what I found out.
In the beginning there was an instance method for Stream.concat(Stream)
In the mailing list I can clearly see the method wa...
overlay two images in android to set an imageview
...ort android.widget.ImageView;
import com.squareup.picasso.Picasso;
import java.io.IOException;
import java.util.List;
public class MergeImageView extends ImageView {
private SparseArray<Bitmap> bitmaps = new SparseArray<>();
private Picasso picasso;
private final int DEFAU...
Java: Detect duplicates in ArrayList?
.../false) whether an ArrayList contains more than one of the same element in Java?
16 Answers
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How to set a JVM TimeZone Properly
I am trying to run a Java program, but it is taking a default GMT timezone instead of an OS defined timezone. My JDK version is 1.5 and the OS is Windows Server Enterprise (2007)
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how to get the one entry from hashmap without iterating
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If you are using Java 8, it is as simple as findFirst():
Quick example:
Optional<Car> theCarFoundOpt = carMap.values().stream().findFirst();
if(theCarFoundOpt.isPresent()) {
return theCarFoundOpt.get().startEngine();
}
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Is it good practice to make the constructor throw an exception? [duplicate]
... a checked exception for this2.
However explicitly declaring or throwing java.lang.Exception is almost always bad practice.
You should pick an exception class that matches the exceptional condition that has occurred. If you throw Exception it is difficult for the caller to separate this exceptio...