• Length <2000LOC
• Package declaration
• Documentation comment
• Imports
• Class comment
• Class/interface signature
• Java File Organization

package edu.depaul.cdm.soc.se350;

/** 
 * Demonstrates Java File Organization
 */
import java.util.List;

/**
 * Class comment
 */
public class Demo {
  // Static variables, ordered public to private
  public static final int MY_CONST = 1;
  private static final int OTHER = 2;
  // Instance variables, ordered public to private
  private int i;
  // Constructors, overloaded in sequential order
  public Demo() { this(3); }
  public Demo(int i) { this.i = i; }
  // Methods, ordered public to private
  public void print() { System.out.println("i = " + i); }
} 

• Set of rules to make code uniform
• Prefer short and descriptive names
• Package: all lowercase edu.depaul.cdm.soc.se350
• Class, enum, interface, and annotation: PascalCase MyClass
• Methods, field names, variables: camelCase printMe
• Constants: all caps + underscore MY_CONST
• File: matches the class name MyClass.java

// prefer                     // avoid (too detailed or redundant)
int schoolId;                 // identifierOfSchool;
int[] uniqueSchoolIds;        // schoolIdsAfterRemovingDuplicates;
Map<Integer, User> usersById; // idToUserMap
String value;                 // valueString