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erenuygurerenuygur
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If else / Boolean Expressions / If else Examples / Ternary Operator
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8 files changed

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‎src/lessons/l6/AndOrOperators.java‎

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package lessons.l6;
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public class AndOrOperators {
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public static void main(String[] args)
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{
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}
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}

‎src/lessons/l6/BooleanExpressions.java‎

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package lessons.l6;
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public class BooleanExpressions {
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public static void main(String[] args)
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{
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java.util.Scanner keyboard = new java.util.Scanner(System.in);
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System.out.print("First number: ");
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int firstNumber = keyboard.nextInt();
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System.out.print("Second number: ");
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int secondNumber = keyboard.nextInt();
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boolean isEqual = firstNumber == secondNumber;
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boolean isFirstNumberGreater = firstNumber > secondNumber;
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boolean isFirstNumberLess = firstNumber < secondNumber;
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boolean isFirstNumberGreaterOrEquals = firstNumber >= secondNumber;
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boolean isFirstNumberLessOrEquals = firstNumber <= secondNumber;
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boolean isNotEqual = firstNumber != secondNumber; // ***
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boolean isAlive = true;
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//...
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if (!isAlive) {
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System.out.println("DEAD");
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}
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}
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}

‎src/lessons/l6/IfElse.java‎

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package lessons.l6;
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public class IfElse {
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public static void main(String[] args)
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{
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java.util.Scanner keyboard = new java.util.Scanner(System.in);
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System.out.print("Yasin age: ");
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int yasinAge = keyboard.nextInt(); // 21
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System.out.print("Akif age: ");
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int akifAge = keyboard.nextInt(); // 29
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System.out.print("Eren age: ");
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int erenAge = keyboard.nextInt(); //17
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// Let's go to the bar
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if (yasinAge >= 18)
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System.out.println("Yasin can enter the bar");
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else
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System.out.println("Yasin cant enter the bar");
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if (akifAge >= 18) {
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System.out.println("Akif can enter the bar");
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}
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else {
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System.out.println("Akif cant enter the bar");
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}
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if (erenAge >= 18) {
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System.out.println("Eren can enter the bar");
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} else {
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System.out.println("Eren cant enter the bar");
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}
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}
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}

‎src/lessons/l6/IfElseExample.java‎

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package lessons.l6;
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public class IfElseExample {
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public static void main(String[] args)
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{
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java.util.Scanner keyboard = new java.util.Scanner(System.in);
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System.out.print("First number: ");
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int firstNumber = keyboard.nextInt();
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System.out.print("Second number: ");
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int secondNumber = keyboard.nextInt();
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// First > Second
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if (firstNumber > secondNumber) {
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System.out.println("First number > Second Number");
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}
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System.out.print("Yasin age: ");
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int yasinAge = keyboard.nextInt();
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if (yasinAge >= 18) {
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System.out.println("Ilk adim tamamlandi");
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System.out.print("Yasinin kiz arkadasi var mi? ");
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boolean hasGirlFriend = keyboard.nextBoolean();
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if (hasGirlFriend) {
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System.out.println("Girebilirsin");
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} else {
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System.out.println("Giremezsin");
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}
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}
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}
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}

‎src/lessons/l6/IfElseExample2.java‎

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package lessons.l6;
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public class IfElseExample2 {
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public static void main(String[] args)
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{
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java.util.Scanner keyboard = new java.util.Scanner(System.in);
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System.out.print("Age: ");
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int age = keyboard.nextInt();
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// Display Generation
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if (age < 5) {
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System.out.println("Bebek");
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} else if (age < 13) {
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System.out.println("Cocuk");
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} else if (age < 18) {
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System.out.println("Genc");
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} else if (age < 25) {
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System.out.println("Yetiskin");
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} else if (age < 35) {
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System.out.println("Orta yas");
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} else {
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System.out.println("Yasli");
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}
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}
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}

‎src/lessons/l6/IfElseExample3.java‎

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package lessons.l6;
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public class IfElseExample3 {
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public static void main(String[] args)
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{
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java.util.Scanner keyboard = new java.util.Scanner(System.in);
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System.out.print("Username: ");
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String userName = keyboard.nextLine();
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// Username = "efficient" + Password = "compareTo"
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if (userName.equals("efficient")) {
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System.out.print("Password: ");
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String password = keyboard.nextLine();
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if (password.equals("compareTo")) {
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System.out.println("Welcome to Efficient House");
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} else {
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System.out.println("Your password is wrong");
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}
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} else {
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System.out.println("There is no such user");
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}
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}
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}

‎src/lessons/l6/IfElseExample4.java‎

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package lessons.l6;
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public class IfElseExample4 {
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public static void main(String[] args)
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{
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java.util.Scanner keyboard = new java.util.Scanner(System.in);
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System.out.print("Username: ");
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String userName = keyboard.nextLine();
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if (userName.charAt(2) == 's') {
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System.out.print("Password: ");
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String password = keyboard.nextLine();
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if (password.charAt(password.length() - 3) == 'x') {
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System.out.println("Welcome to Efficient House");
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} else {
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System.out.println("Your password is wrong");
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}
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} else {
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System.out.println("There is no such user");
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}
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}
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}

‎src/lessons/l6/TernaryOperator.java‎

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package lessons.l6;
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public class TernaryOperator {
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public static void main(String[] args)
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{
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java.util.Scanner keyboard = new java.util.Scanner(System.in);
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System.out.print("First number: ");
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int firstNumber = keyboard.nextInt();
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System.out.print("Second number: ");
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int secondNumber = keyboard.nextInt();
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int max;
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if (firstNumber >= secondNumber) {
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max = firstNumber;
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} else {
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max = secondNumber;
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}
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max = (firstNumber >= secondNumber) ? firstNumber : secondNumber;
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System.out.println(max);
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}
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}

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