conditional and looping in java

JavaConditionalStatements.java

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+class JavaConditionalStatements {
+    public static void main(String args[]) {
+        int a = 3, b = 20, c = 30;
+        // Simple if-else statement:
+        if (a < b) {
+            System.out.printf("%d is less than %d", a, b);
+        } else {
+            System.out.printf("%d is greater than %d", a, b);
+        }
+
+        System.out.println(" ");
+
+        // Ladder if-else or if-else if
+        if (a > b && a > c) {
+            System.out.printf("%d is the greatest number.", a);
+        } else if (b > a && b > c) {
+            System.out.printf("%d is the greatest number", b);
+        } else {
+            System.out.printf("%d is the greatest number", c);
+        }
+
+        System.out.println(" ");
+
+        // Switch case
+
+        int day = 8;
+
+        switch (day) {
+
+            case 1:
+                System.out.println("Monday");
+                break;
+
+            case 2:
+                System.out.println("Tuesday");
+                break;
+
+            case 3:
+                System.out.println("Wednesday");
+                break;
+
+            case 4:
+                System.out.println("Thrusday");
+                break;
+
+            case 5:
+                System.out.println("Friday");
+                break;
+
+            case 6:
+                System.out.println("Saturday");
+                break;
+
+            case 7:
+                System.out.println("Sunday");
+                break;
+
+            default:
+                System.out.println("Please make a valid choice..");
+        }
+
+    }
+
+}

JavaLooping.java

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+public class JavaLooping {
+    public static void main(String[] args) {
+        // for loops : program to print all even numbers between 1-50
+
+        for (int i = 0; i <= 50; i++) {
+            if (i % 2 == 0) {
+                System.out.println(i);
+            }
+        }
+
+        // while loop :
+
+        int num = 0;
+
+        while (num <= 5) {
+            System.out.println("Hello World !");
+            num++;
+        }
+
+        // do-while loop:
+
+        do {
+            System.out.println("Hello from do-while loop");
+            num++;
+        } while (num > 10);
+
+        // Nested loop:
+
+        for (int i = 0; i < 3; i++) {
+            for (int j = 0; j < 2; j++) {
+                System.out.println(i);
+            }
+            System.out.println();
+        }
+
+        int weeks = 3;
+        int days = 7;
+        int i = 1;
+        // outer loop
+        while (i <= weeks) {
+            System.out.println("Week: " + i);
+
+            // inner loop
+            for (int j = 1; j <= days; ++j) {
+                System.out.println("  Days: " + j);
+            }
+            ++i;
+        }
+
+    }
+}