UNIX- How to do integer & float calculations, in bash or other languages/frameworks
PROBLEM: Using echo “20+5” literally produces the text “20+5”. What command you use to get the...
UNIX – What is the difference between /opt and /usr/local
/opt: /opt is for “the installation of add-on application software packages”. /usr/local : /usr/local is...
[ Solved -7 Answers ] JAVA – How to test a class that has private methods, fields or inner classes
Private method is a which can be invoked by code in the same class. It is not inherited by subclasses. A field is a class,...
JAVA – compound assignment operators(+=, -=, *=, /=) in java
Java provides a set of operators to manipulate variables. We can divide all the Java operators into the following groups:...
JAVA – Read/convert an InputStream to a String
The Java.io.InputStream class is the superclass of all classes representing an input stream of bytes. Applications that need...
[Solved -9 Answers] CSS – Is it possible to include one CSS file in another
PROBLEM : Is it possible to include one CSS file in another? SOLUTION 1 Yes,its possible to include one css file in...
JAVA – Why is char[] preferred over String for passwords
A char[] is an arrayof primitive numbers of type char. All it provides is a length attribute, and a way to get and set...
[Solved – 11 Answers] CSS – HTML – Space between two rows in a table
PROBLEM : Is this possible via CSS? We are trying [pastacode lang=”css”...
JAVA – How to generate random integers within a specific range in Java
In programming world, we often need to generate random numbers, sometimes random integers in a range e.g. 1 to 100 etc....
HTML – CSS – Why em instead of px?
Definition of em : When referring to HTML, the <em> tag (short fo emphasized) is used to give emphasis to a certain...
