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How do I read / convert an InputStream into a String in Java?
If you have a java.io.InputStream object, how should you process that object and produce a String ?
59 Answers
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Why does Java's hashCode() in String use 31 as a multiplier?
Per the Java documentation, the hash code for a String object is computed as:
13 Answers
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How can I convert an image into a Base64 string?
...on Android, here's a helper copied from the React Native codebase:
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import android.util.Base64;
import androi...
Why is IntelliJ 13 IDEA so slow after upgrading from version 12?
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MaxPermSize is ignored since Java 8.
– user2418306
Apr 4 '16 at 11:11
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show 11 more comments
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JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
...INGLE standard, but I have seen 3 styles you mention ("Pascal/Microsoft", "Java" (camelCase) and "C" (underscores, snake_case)) -- as well as at least one more, kebab-case like longer-name).
It mostly seems to depend on what background developers of the service in question had; those with c/c++ bac...
Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...three 1.0 2.24 NaN 2.24 2.24 2.24 2.24 2.24
two 1.0 -0.98 NaN -0.98 -0.98 -0.98 -0.98 -0.98
foo one 2.0 1.36 0.58 0.95 1.15 1.36 1.56 1.76
three 1.0 -0.15 NaN -0.15 -0.15 -0.15 -0.15 -0.15
two 2.0 1.42 0.63 0.98 1.20 1.42 1.65 1.87
To get s...
Executing JavaScript without a browser?
I am looking into Javascript programming without a browser. I want to run scripts from the Linux or Mac OS X command line, much like we run any other scripting language (ruby, php, perl, python...)
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URL query parameters to dict python
...t;> url = "http://www.example.org/default.html?ct=32&op=92&item=98"
>>> parse.urlsplit(url)
SplitResult(scheme='http', netloc='www.example.org', path='/default.html', query='ct=32&op=92&item=98', fragment='')
>>> parse.parse_qs(parse.urlsplit(url).query)
{'item':...
How to pass an object from one activity to another on Android
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Serializable is a standard Java interface. You simply mark a class Serializable by implenting the interface, and Java will automatically serialize it in certain situations. Parcelable is an Android specific interface where you implement the serializa...
How can “while (i == i) ;” be a non-infinite loop in a single threaded application?
...r: "Double.NaN==Double.NaN has the value false". This is elaborated in the Java Language Specification under "Floating-Point Types, Formats, and Values":
NaN is unordered, so the numerical
comparison operators <, <=, >, and >=
return false if either or both
operands are NaN. Th...