Check out example codes for "java how to define a function". It will help you in understanding the concepts better.

Code Example 1

//declare a function like this:
void function(int parameter1)
{
	//function body
}
//call the function like this:
function(1);

Code Example 2

public static void main(String[] args)
{
	int length=getLength();
  	System.out.println("Your length is: "+length);
}
//methods are outside of main method
public static int getLength()
{
	int length=5;
  	return length;
}

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