Below is the syntax highlighted version of ZipBarCoder.java from §1.4 Arrays.

/******************************************************************************
 * Compilation: javac ZipBarCoder.java
 * Execution: java ZipBarCoder n
 *
 * Reads in a 5 digit zip code and prints out the postal barcode.
 *
 ******************************************************************************/
publicclassZipBarCoder{
publicstaticvoidmain(String[] args){
int n = Integer.parseInt(args[0]);
int[] digits =newint[6];
int[][] code ={{1,1,0,0,0},
{0,0,0,1,1},
{0,0,1,0,1},
{0,0,1,1,0},
{0,1,0,0,1},
{0,1,0,1,0},
{0,1,1,0,0},
{1,0,0,0,1},
{1,0,0,1,0},
{1,0,1,0,0}};
// extract digits
for(int i =1; i <=5; i++){
 digits[i]= n %10;
 n /=10;
}
// compute check digit
int checkdigit =0;
for(int i =1; i <=5; i++)
 checkdigit += digits[i];
 digits[0]= checkdigit %10;
// print barcode
 System.out.println("*****");
for(int i =5; i >=0; i--)
for(int j =0; j <5; j++)
if(code[digits[i]][j]==1) System.out.println("*****");
else System.out.println("**");
 System.out.println("*****");
}
}