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Make a phone number callable in Android
You may want to present a number and make it callable.
Located in
Computing
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Programming
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Java
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Check if a string has a white space at any position
It is important sometimes to check a string and make sure that it does contain a white space (e.g. space, new line, tab, etc ...).
Located in
Computing
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Programming
/
Java
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Check if a string is Null or Empty
It is sometimes not practical to work out a string object immediately before validating if it is null or not
Located in
Computing
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Programming
/
Java
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Java Basics
Some fundamental questions about Java that you should know and may be asked during interviews
Located in
Computing
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Programming
/
Java
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Quadratic Expressions - Expanding
Expanding quadratic expressions is very important. It should be very easy as well. Do not be scared. Take the quiz and try it yourself
Located in
Mathematics
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Algebra
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Area of complex shapes
These are more into practical questions in real life. We do not find shapes just in simple squares and circles. There are actually different types of shapes ...
Located in
Mathematics
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Geometry
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Java conditions
The quiz presents a Java code that takes an input and prints an output based on some conditions. Take the quiz and test your understanding about conditional ...
Located in
Computing
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Programming
/
Java
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Geometry Basics
Test your basic knowledge about geometry. We all need some refreshment every now and then. You think you remember everything about geometry. You may be ...
Located in
Mathematics
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Geometry
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Fundamentals
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Java arrays
Array is an important structure in programming language and Java programming language no difference
Located in
Computing
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Programming
/
Java
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What are the trade-off choices between performance and security?
A trade-off decision that many solution architects struggle to make is what requirements to compromise if security and performance requirements conflict? ...
Located in
Computing
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Software Engineering
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Architecture