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Java Articles
Page 440 of 450
Difference 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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Regular Expressions syntax in Java Regex
Following is a simple program demonstrating how to use regular expression in Java. Java Regex Characters
Read MoreWhat is the package for String Class in Java?
String class belongs to the java.lang package.
Read MoreIs StringBuffer final in Java?
Yes, StringBuffer class is final Java. We cannot override this class.
Read MoreWhy we do not import a package while we use any string function?
The String class belongs to the java.lang package. This is the default package of the Java language therefore it is not mandatory to import it to use its classes.
Read MoreImmutable String in Java
In Java immutable objects are those whose data can’t be changed or modified (once modified). String class is immutable i.e. once we create a String object its data cannot be modified.
Read MoreWhat is the difference between Java and Core Java?
Java is a programming language, whereas Core Java is a computing platform. Java Platform Standard Edition is Core Java, which is also called Java SE. The following are the computing following supported by Java, which also has Core Java as its part:Java SE Java Standard Edition used to develop desktop applications. A well-known implementation of Java SE is the Java Development Kit (JDK).Java EE Java Enterprise Edition i.e. Java 2 Platform, Enterprise Edition or J2EE. Java EE is used for applications running on servers. Java ME Java Micro Edition is used for applications running on mobile phones.Java SE is the Standard Edition and also ...
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