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Java: Get last element after split
...ble ways together!!
By using lastIndexOf() & substring() methods of Java.lang.String
// int firstIndex = str.indexOf( separator );
int lastIndexOf = str.lastIndexOf( separator );
String begningPortion = str.substring( 0, lastIndexOf );
String endPortion = str.substring( lastIndexOf + 1 );
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Accessing members of items in a JSONArray with Java
I'm just getting started with using json with java. I'm not sure how to access string values within a JSONArray. For instance, my json looks like this:
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Java String to SHA1
I'm trying to make a simple String to SHA1 converter in Java and this is what I've got...
12 Answers
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How can I lookup a Java enum from its String value?
...says that static initialization occurs from top to bottom: docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#d5e12267
– Selena
Oct 15 '14 at 18:22
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Division of integers in Java [duplicate]
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Is there any keyword in java to divide two numbers e.g. 'Math.floorDiv(num1,num2)'
– Rudra
Jan 4 '16 at 12:51
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What is the “volatile” keyword used for?
...t usage. Could you please tell me what it should be used for in C# and in Java?
8 Answers
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?
... address.It is possible to retrieve an
object’s memory address using the java.lang.Unsafe class, and operate on its fields directly via unsafe get/put methods!
Compile time optimizations for JVM. HIgh performance VM using "magic", requiring low-level operations. eg: http://en.wikipedia.org/wiki/Ji...
Functional style of Java 8's Optional.ifPresent and if-not-Present?
In Java 8, I want to do something to an Optional object if it is present, and do another thing if it is not present.
12 A...
IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
...I removed my old JSDK and added it again, but it does not work. I am using Java 2016.3
– mtber75
Dec 1 '16 at 14:09
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show 16 more comments
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Best way to concatenate List of String objects? [duplicate]
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Your approach is dependent on Java's ArrayList#toString() implementation.
While the implementation is documented in the Java API and very unlikely to change, there's a chance it could. It's far more reliable to implement this yourself (loops, StringBuild...