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Jose Mejia

24 Sep, 4 tweets, 2 min read

✅Java Loops

Loops executed the code as long as the condition is true. They are very useful to repeat a block of code.

There are a couple of loops. I will focus on the two most use.
👇

👉while
👉for

Let's see them in more detail
👇
#Java #100DaysOfCode

while 👉 use a while loop when you don't know how many times you want to execute the code.

for 👉 use the for loop when you know how many times you want to execute the block of code.

Example👇while and for loop
#Java #100DaysOfCode

Example code can be downloaded 👉 github.com/jmejiamu/java-…

Make sure you follow me on GitHub too 😄

if you don't mind kindly RT. 👋

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Jose Mejia

@JoseMejia62

23 Sep

https://twitter.com/JoseMejia62/status/1439854350130581508

✅Java If statement

if statements are combined with logical conditions. Here is a thread about them so you can have an idea of what they are.

if statements allow us to make different actions and make different decision base on a logical test.

#Java #100DaysOfCode
cont...

https://twitter.com/JoseMejia62/status/1439854350130581508

✅Now let's take a look at the different conditional statements.

if👉 executed if condition return true
else 👉 executed if the if condition return false
else if 👉new condition if first condition return false.

example 👇
#Java #100DaysOfCode

✅Ternary Operator

This is a shortcut for "if else". it has three operands: condition, an expression that returns true, and expression which returns false.

Example👇
#Java #100DaysOfCode

Read 4 tweets

Jose Mejia

@JoseMejia62

22 Sep

✅Java

✅String manipulation

Strings are a collection of characters. The keyword String is an object and comes with a lot of useful methods to manipulate a text.

Let's see some of the basic
👇
#Java #DEVCommunity #100daysofcoding

✅The basic method to manipulate a String

length() - return the number of characters that the text contain

toUpperCase() - it will change the text to capital letters

toLowerCase() - it will change the text to lower case

concat() - it adds two strings together.

Ex.👇
#Java

✅How do we add special characters to String?

✅The value of the string must be in quotes ex. "hello". To obtain the output - Joe's car. We need the help of "\".

✅Let's see how \ can help us to accomplish that.

Continue...
#Java #DEVCommunity

Read 6 tweets

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