Usability of Curly Brackets

Question

Say I have the following code below that only uses 2 curly brackets:

public void listFish(){
System.out.println(name + " with " + numFishCaught + " fish as follows: ");
for (Fish f: fishCaught)
    if (f != null)
    System.out.println(f.toString());}

Will it hurt my code or change the way it runs if I rewrite it this way? What is generally the correct way of using curly brackets? Thanks

public void listFish(){
System.out.println(name + " with " + numFishCaught + " fish as follows: ");
for (Fish f: fishCaught){
    if (f != null){
    System.out.println(f.toString());
    }
}     } 

Answer 1

For a single statement it will remain same, but if you want to group more than one statement in the if block then you have to use curely braces.

if("pie"== "pie"){
    System.out.println("Hurrah!");
    System.out.println("Hurrah!2");
}

if("pie"== "pie")
    System.out.println("Hurrah!"); //without braces only this statement will fall under if
    System.out.println("Hurrah!2"); //not this one

You should see:Blocks

A block is a group of zero or more statements between balanced braces and can be used anywhere a single statement is allowed. The following example, BlockDemo, illustrates the use of blocks:

class BlockDemo {
     public static void main(String[] args) {
          boolean condition = true;
          if (condition) { // begin block 1
               System.out.println("Condition is true.");
          } // end block one
          else { // begin block 2
               System.out.println("Condition is false.");
          } // end block 2
     }
}