Java: String Concatention Precedence

With the ability of Java to concatenate strings using the plus (+) sign, a common mistake that new programmers may face is the mix up of adding integers and strings. Let me show you a sample.

Consider the following code:

public class StringConcatTest { 
   public static void main(String[] args){
       int firstNum = 10;
       int secNum = 5;    
       System.out.println(firstNum + secNum + " total number of apples.");
       System.out.println("Total number of apples: " + firstNum + secNum);       
   }
} 

OUTPUT:
15 total number of apples.
Total number of apples: 105 

Clearly, the second sentence is incorrect.

Java: Valid Java Keywords

A table of java keywords that cannot be used as identifiers.

Java: Handling Braces

It is good programming practice to maintain a format when coding. These formats can be anything from indentation, white spaces, line wrapping, separation of code and braces handling. Why is it important? - To make the code readable.

There are two distinct way of handling braces:

1. K&R style

while(a!=b){

     doMethod();

}

2. Allman Style

while(a!=b)

{

     doMethod();

}

Personally I prefer the K&R and I practice it on my code. Always remember, good coding practice makes a good programmer. :)