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What is JAVA_HOME variable in Java Environment?
JAVA_HOME refers to jdk/bin directory. It is used by a java based application.
Read MoreHow to set Java Path in Linux OS?
Environment variable PATH should be set to point to where the Java binaries have been installed. Refer to your shell documentation if you have trouble doing this.Example, if you use bash as your shell, then you would add the following line to the end of your '.bashrc: export PATH=/path/to/java:$PATH'
Read MoreHow to set JAVA_HOME for Java in Linux?
Assuming you have installed Java in \usr\local\java\jdk directory −if you use bash as your shell, then you would add the following line to the end of your '.bashrc: export JAVA_HOME=\usr\local\java\jdk'
Read MoreHow to set JAVA_HOME for Java in Mac OS?
Assuming you have installed Java in \usr\local\java\jdk directory −if you use bash as your shell, then you would add the following line to the end of your '.bashrc: export JAVA_HOME=\usr\local\java\jdk'
Read MoreGlobal variables in Java
There is no global variables support in Java. Static variables can be used as an alternate solution for global variables.
Read MoreJava Variable Narrowing Example
Narrowing refers to passing a higher size data type like int to a lower size data type like short. It may lead to data loss. Casting is required for narrowing conversion. Following program output will be 44. public class MyFirstJavaProgram { public static void main(String []args) { int a = 300; byte b = (byte)a; // narrowing System.out.println(b); } }
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.
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