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JAVA ESCAPE SEQUENCE (some) public class tutorial { public static void main(String[] args) { // ESCAPE SEQUENCE // \n System.out.println("Creates a new line\n"); // \t System.out.println("\tInserts a tab"); // ' System.out.println("Insert 'single' quotation mark"); // " System.out.println("Insert "double" quotation mark"); // \ System.out.println("Inserts a \ or backslash"); }
JAVA PRINTF
public class tutorial { public static void main(String[] args) { // PRINTF // %n specifier System.out.printf("This should inser an enter after this %n Did it work?\n"); // integer int age = 18 ; System.out.printf("Your age is %d%n", age); // char char symbol = '@'; System.out.printf("The symbol you chose is %c%n", symbol); // float double float p = (float) 3.14; double e = 2.71828; System.out.printf("The pi is %f, and the value of e is %f%n", p, e); // boolean boolean online = true; System.out.printf("Is itchy online? %b%n", online); // String String name = "Itchy"; System.out.printf("Your name is %s%n", name); }
JAVA ARRAY
public class tutorial { public static void main(String[] args) { // JAVA ARRAY // one dimension array int[] array1 = { 1 , 2 , 3 }; // declaring the size of the array and using index to assign a value int[] array2 = new int[ 3 ]; array2[ 0 ] = 1 ; array2[ 1 ] = 2 ; array2[ 2 ] = 3 ; // string array // editing array on runtime String[] names = {"Johnny","Mike","Harold"}; names[ 2 ] = "Itchy"; System.out.println(names[ 2 ]); }
JAVA 2D ARRAY
public class tutorial { public static void main(String[] args) { // JAVA 2D ARRAY // int int[][] ages = { { 11 , 14 , 16 }, { 24 , 26 , 27 }, { 31 , 35 , 36 } }; System.out.println(ages[ 1 ][ 0 ]); // String // editing 2d array during runtime String[][] names = new String[ 2 ][ 2 ]; names[ 0 ][ 0 ] = "John"; names[ 0 ][ 1 ] = "Mike"; names[ 1 ][ 0 ] = "Mica"; names[ 1 ][ 1 ] = "Charlie"; // change of value names[ 1 ][ 1 ] = "Rodney"; System.out.println(names[ 1 ][ 1 ]); }
JAVA ARRAY EXERCISE [get the average of int in an array] import java.util.Scanner; public class tutorial { public static void main(String[] args) { // JAVA ARRAY [EXERCISE] // scanner object Scanner input = new Scanner(System.in); // array declaration float[] numbers = new float[ 3 ]; System.out.print("Enter the first number: "); numbers[ 0 ] = input.nextInt(); System.out.print("Enter the second number: "); numbers[ 1 ] = input.nextInt(); System.out.print("Enter the third number: "); numbers[ 2 ] = input.nextInt(); // array length float arrLen = numbers.length; // average computation float average = (numbers[ 0 ] + numbers[ 1 ] + numbers[ 2 ])/ arrLen; // final printing System.out.println("The average of your numbers is: " + average); input.close(); }
JAVA 2D ARRAY EXERCISE [IGN generator using 2d array] import java.util.Scanner; public class tutorial { public static void main(String[] args) { // JAVA 2D ARRAY [EXERCISE] // scanner Scanner input = new Scanner(System.in); // ign variables String[][] ign = { {"red","purple","blue"}, {"kind","normal","naughty"}, {"explosive","exisitng","chilling"} }; // ign decisions System.out.print("How do you like colors? [1] warm, [2] neutral, [3] cold: "); int dec1 = input.nextInt(); System.out.print("What kind of person are you? [1] kind, [2] normal, [3] naughty: "); int dec2 = input.nextInt(); System.out.print("How do you like living? [1-3] 1 being best, 3 being low: "); int dec3 = input.nextInt(); // ign building String chosen1 = ""; String chosen2 = ""; String chosen3 = ""; // chosen conditions // chosen if (dec1 == 1 ) { chosen1 = "red"; } else if (dec1 == 2 ) { chosen1 = "purple"; } else if (dec1 == 3 ) { chosen1 = "blue"; } // chosen if (dec2 == 1 ) { chosen2 = "kind"; } else if (dec2 == 2 ) { chosen2 = "normal"; } else if (dec2 == 3 ) { chosen2 = "naughty"; } // chosen if (dec3 == 1 ) { chosen3 = "explosive"; } else if (dec3 == 2 ) { chosen3 = "exisitng"; } else if (dec3 == 3 ) { chosen3 = "normal"; } //ign printing System.out.printf("Your IGN is: %s_%s-%s", chosen1, chosen2, chosen3); input.close(); }
