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Java Articles
Page 439 of 450
Is there any tool that can convert an XSD file to a Python class as JAXB does for Java?
I would recommend generateDS for converting a XSD file to a Python class . In my opinion, it is a good tool for the said purpose.It (generatS) generates the Python class with all methods (setters and getters, export to XML, import from XML). It does a good job and works very well !.
Read MoreDifference between HashMap and HashTable in Java.
HashMap is non-syncronized and is not thread safe while HashTable is thread safe and is synchronized. HashMap allows one null key and values can be null whereas HashTable doesn't allow null key or value. HashMap is faster than HashTable. HashMap iterator is fail-safe where HashTable iterator is not fail-safe. HashMap extends AbstractMap class where HashTable extends Dictionary class.
Read MoreHow to avoid Java code in jsp page?
You can use JSTL, JSP Standard Tag Library or EL, Expression Language to avoid scriptlets.
Read MoreHow do we compare String in Java
https://www.tutorialspoint.com/javaexamples/string_compare.htm
Read MoreWhen to use LinkedList over ArrayList in Java
LinkedList should be used where modifications to a collection are frequent like addition/deletion operations. LinkedList is much faster as compare to ArrayList in such cases. In case of read-only collections or collections which are rarely modified, ArrayList is suitable.
Read MoreWhich one is faster Array or List in Java
The array is faster in case of access to an element while List is faster in case of adding/deleting an element from the collection.
Read MoreWhy can't static method be abstract in Java?
A static method belongs to class not to object instance thus it cannot be overridden or implemented in a child class. So there is no use of making a static method as abstract.
Read MoreDifference between declaring a variable before or in a Java loop.
Performance wise, there is hardly any difference. But it is good to keep a variable local to the scope it is used. So declaring a variable inside Java loop is generally preferred.
Read MoreHow to concatenate byte array in java?
You ByteArrayOutputStream to write byte arrays and get the result using its toByteArray() method.import java.io.ByteArrayOutputStream; import java.io.IOException; public class Tester { public static void main(String[] args) throws IOException { byte[] a = { 1,2,3}; byte[] b = { 4,5,6}; ByteArrayOutputStream baos = new ByteArrayOutputStream(); baos.write(a); baos.write(b); byte[] c = baos.toByteArray(); for(int i=0; i< c.length ; i++){ System.out.print(c[i] +" "); } } }Output1 2 3 4 5 6
Read MoreWhy java is both compiled and interpreted language.
Yes, a java program is first compiled into bytecode which JRE can understand. ByteCode is then interpreted by the JVM making it as interpreted language.
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