Update: 2021-Jan-20

.gitignore

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+*.swp
+*.class

lab_txt_msg_expander/txt_msg_expander.java

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+import java.util.Scanner;
+
+public class txt_msg_expander {
+
+	public static String replaceText(String input,
+										String replaceThis,
+										String withThis) {
+		System.out.println("Replaced \"" +replaceThis + "\" with \"" +
+			   	withThis + "\"");
+			return input.replace(replaceThis, withThis);
+	}
+
+	public static void main(String[] args) {
+		Scanner scnr = new Scanner(System.in);
+
+		System.out.println("Enter text:");
+		String usr_input = scnr.nextLine();
+		System.out.println("You entered: " + usr_input+"\n");
+
+		if (usr_input.contains("BFF")){
+		usr_input =	replaceText(usr_input, "BFF", "best friend forever");
+		}
+
+		if (usr_input.contains("IDK")){
+		usr_input =	replaceText(usr_input, "IDK", "I don't know");
+		}
+
+		if (usr_input.contains("JK")){
+		usr_input =	replaceText(usr_input, "JK", "just kidding");
+		}
+
+		if (usr_input.contains("TMI")){
+		usr_input =	replaceText(usr_input, "TMI", "too much information");
+		}
+
+		if (usr_input.contains("TTYL")){
+		usr_input =	replaceText(usr_input, "TTYL", "talk to you later");
+		}
+
+		System.out.println("\nExpanded: " + usr_input);
+
+		scnr.close();
+		}
+}

old/java1/exam/another_wut.java

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+public class Widget {
+ private int inStock;
+ public Widget() {
+ inStock = 10;
+ }
+ public void addInventory(int amt) {
+ inStock = inStock + amt;
+ }
+ public static void main(String [] args){
+ Widget blueWidget = new Widget();
+ Widget greenWidget = new Widget();
+ blueWidget.addInventory(15);
+ greenWidget.addInventory(5);
+ }
+}
+

old/java1/exam/wut.java

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+public class Student {
+ private double myGPA;
+ private int myCredits;
+
+ public void increaseCredits(int amount) {
+ myCredits = myCredits + amount;
+ }
+ public void setCredits(int credits) {
+ myCredits = credits;
+ }
+ public int getCredits() {
+ return myCredits;
+ }
+ public static void main(String [] args) {
+ Student s = new Student();
+ s.setCredits(6);
+ s.increaseCredits(12);
+ System.out.println(s.getCredits());
+ }
+}

old/java1/lab-12/12.6-eception/NameAgeChecker.java

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+import java.util.Scanner;
+import java.util.InputMismatchException;
+
+public class NameAgeChecker {
+   public static void main(String[] args) {
+      Scanner scnr = new Scanner(System.in);
+
+      String inputName;
+      int age;
+
+      inputName = scnr.next();
+      while (!inputName.equals("-1")) {
+         // FIXME: The following line will throw an InputMismatchException.
+         //        Insert a try/catch statement to catch the exception.
+         try {
+         age = scnr.nextInt();
+         }
+         catch (InputMismatchException e){
+            age = -1;
+            scnr.nextLine();
+         }
+         System.out.println(inputName + " " + (age + 1));
+
+         inputName = scnr.next();
+      }
+   }
+}

painting-a-wall/painting_a_wall.java

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+import java.util.Scanner;
+
+public class painting_a_wall {
+	public static void main(String[] args) {
+		Scanner scnr = new Scanner(System.in);
+
+		double height, width;
+		final double square_feet_per_gallon = 350;
+
+		System.out.println("Enter wall height (feet):");
+		height = scnr.nextDouble();
+
+		System.out.println("Enter wall width (feet):");
+		width = scnr.nextDouble();
+
+		System.out.println("Wall area: " + height*width +
+							" square feet");
+
+		System.out.println("Paint needed: " +
+			(height*width)/square_feet_per_gallon +
+				" gallons");
+
+		System.out.println("Cans needed: " +
+				(int)Math.ceil((height*width)/square_feet_per_gallon)+
+							" can(s)");
+
+		scnr.close();
+		}
+}

palindrome/palindrome.java

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+import java.util.Scanner;
+import java.lang.StringBuffer;
+
+public class palindrome {
+
+	public static void main(String[] args) {
+		Scanner scnr = new Scanner(System.in);
+
+		System.out.println("Enter text:");
+		String usrInput = scnr.nextLine();
+		System.out.println();
+		String reverseUsrInput;
+
+		usrInput = usrInput.replace(" ", "");
+		reverseUsrInput = new StringBuffer(usrInput).reverse().toString();
+
+		if (usrInput.equals(reverseUsrInput)){
+			System.out.println(usrInput + " is a palindrome");
+		}
+		else {
+			System.out.println(usrInput + " is not a palindrome");
+		}
+
+		scnr.close();
+		}
+}

word-freq/wordFreq.java

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+import java.util.Scanner;
+
+/*
+ * input: 5 hey hi Mark hi mark
+ * output:
+ * 			hey 1
+ * 			hi 2
+ * 			Mark 1
+ * 			hi 2
+ * 			mark 1
+ *
+ * assume input will always be less than 20 words
+ * hint: Use two arrays, one array for strings
+ * 						 one array for frequencies
+ */
+
+
+public class wordFreq {
+
+	public static void main(String[] args) {
+		Scanner scnr = new Scanner(System.in);
+
+		String[] words = new String[20];
+		int[] frequencies = new int[20];
+
+		int numberOfWords = scnr.nextInt();
+
+		for (int i=0; i<numberOfWords; i++){
+		   words[i] = scnr.next();
+		}
+
+		for (int i=0; i<numberOfWords; i++){
+			for (int j=0; j<numberOfWords; j++){
+				if (words[i].equals(words[j])){
+					frequencies[i]++;
+				}
+			}
+		}
+		for (int i=0; i<numberOfWords; i++){
+			System.out.println(words[i] + " " + frequencies[i]);
+		}
+		scnr.close();
+	}
+}