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The split() method in Java does not work on a dot (.) [duplicate]
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java.lang.String.split splits on regular expressions, and . in a regular expression means "any character".
Try temp.split("\\.").
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I want to get the type of a variable at runtime
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for readers: this is the most useful solution. As in Javascript typeof x, here manOf(x) say the data type!
– Peter Krauss
Nov 27 '19 at 21:45
add a comme...
Why does the Scala compiler disallow overloaded methods with default arguments?
...y introduce mandatory Hungarian Notation when accessing Scala methods from Java? It seems like it would make the interfaces extremely fragile, forcing the user to take care when type parameters to functions change.
– blast_hardcheese
Dec 17 '14 at 8:44
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How does Java handle integer underflows and overflows and how would you check for it?
How does Java handle integer underflows and overflows?
12 Answers
12
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Convert String array to ArrayList [duplicate]
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Use this code for that,
import java.util.Arrays;
import java.util.List;
import java.util.ArrayList;
public class StringArrayTest {
public static void main(String[] args) {
String[] words = {"ace", "boom", "crew", "dog", "eon"};
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How to get the Full file path from URI
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Caused by: java.lang.IllegalArgumentException: URI is not absolute
– Anu Martin
Feb 15 '18 at 18:13
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How to convert a scala.List to a java.util.List?
How to convert Scala's scala.List into Java's java.util.List ?
9 Answers
9
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How to create a sub array from another array in Java?
...use
JDK > 1.5
Arrays.copyOfRange(Object[] src, int from, int to)
Javadoc
JDK <= 1.5
System.arraycopy(Object[] src, int srcStartIndex, Object[] dest, int dstStartIndex, int lengthOfCopiedIndices);
Javadoc
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String isNullOrEmpty in Java? [duplicate]
...d before, but Googling doesn't find it . Is there, in any of the standard java libraries (including apache/google/...), a static isNullOrEmpty() method for Strings ?
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How can I find and run the keytool
...und a solution by myself as below quote. It works fine.
"C:\Program Files\Java\jdk1.6.0_26\bin\keytool.exe" -exportcert -alias
> sociallisting -keystore "D:\keystore\SocialListing" |
> "C:\cygwin\bin\openssl.exe" sha1 -binary | "C:\cygwin\bin\openssl.exe"
> base64
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