Contents

  1. ./First.java
  2. ./Hello.java

./First.java 1/2

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/**
 * This class demonstrates some basic Java syntax
 *
 * All code in a Java program must belong to a class.
 * There is typically one class per file, and the file name is ClassName.java
 * Compile this code using
 *     javac First.java
 * Run the compiled bytecode First.class using
 *     java First
 * 
 * @author Sara Sprenkle
 */
public class First {  //File must be saved as First.java
  
   /**
    * Called when user runs 
    *  java First
    */
   public static void main(String[] args) { //Blocks start/end with {}
       System.out.println("This is my first Java program!"); //Lines end with ;
       System.out.println("To print a \\, you must use \"\\\\\"");
   }
}

./Hello.java 2/2

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/**
 * Our first Java class!  It displays "Hello, World!".
 *
 * All code in a Java program must belong to a class.
 * There is typically one class per file, and the file name is ClassName.java
 * Compile this code using
 *     javac Hello.java
 * Run the compiled bytecode Hello.class using
 *     java Hello
 * 
 * @author Sara Sprenkle
 */
public class Hello {  //File must be saved as Hello.java
  
   /**
    * Called when user runs 
    *  java Hello
    */
   public static void main(String[] args) { // Blocks start/end with {}
       System.out.println("Hello, World!"); // Lines end with ;
   }
}

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