Several Lines per Statement

You can use several lines for a statement. Anywhere a space character is OK you can split a statement. This means you can't split a statement in the middle of a name, nor between the quote marks of a string literal, nor in the middle of a numeric literal. Recall that a "literal" is an explicit value in the program. Here is the program with some statements correctly put on two lines:

public class Example
{
  public static void main ( String[] args )
  {
    long   hoursWorked = 40;    
    double payRate = 10.0, 
           taxRate = 0.10;    

    System.out.println("Hours Worked: " + 
hoursWorked );
    System.out.println("pay Amount  : " 
+ (hoursWorked * payRate) );
    System.out.println("tax Amount  : " + (hoursWorked 
* payRate * taxRate) );
  }
}

Although correct, the division of statements is confusing to humans. It is also true that anywhere one space is OK any number of spaces are OK. Here is a better style for the program:

public class Example
{
  public static void main ( String[] args )
  {
    long   hoursWorked = 40;    
    double payRate = 10.0, 
           taxRate = 0.10;    

    System.out.println("Hours Worked: " + 
        hoursWorked );
    System.out.println("pay Amount  : " +
       (hoursWorked * payRate) );
    System.out.println("tax Amount  : " + 
       (hoursWorked * payRate * taxRate) );
  }
}

It is a good idea to indent the second half of a split statement further than the start of the statement.

cla
   ss Example
{

  public static void main ( String[] args )
  {
    long   hoursWorked = 40;    
    double payRate = 10.0, taxRate = 0.10;    

    System.out.println("Hours 
        Worked: " + hoursWorked );

    System.out.println("pay Amount  : " + (hours
        Worked * payRate) );

    System.out.println("tax Amount  : " + (
        hoursWorked * payRate * taxRate) );
  }
}