Added IMP Java Program

Java/CheckNoEvenOrNot.java

@@ -0,0 +1,12 @@
+public class CheckNoEvenOrNot {
+    public static void  main(String[] args){
+      int a = 20;
+
+      if(a % 2 == 0){
+          System.out.println("Number is Even");
+      }else{
+          System.out.println("Number is odd");
+      }
+    }
+}
+

Java/CheckNoPrimeOrNot.java

@@ -0,0 +1,15 @@
+
+public class CheckNoPrimeOrNot {
+   public static void main(String[] args) {
+       int a = 1;
+     //  int temp = 0;
+
+       for(int i=2; i<=a/2; i++){
+          if(a%i==0){
+                System.out.println("Number Is Prime");
+          }else{
+              System.out.println("Number Is Not Prime");
+          }
+       }
+   }   
+}

Java/FibonacciSeries.java

@@ -0,0 +1,17 @@
+public class FibonacciSeries {
+    public static void main(String[] args){
+        int n1=0;
+        int n2=1;
+        int sum;
+        int count = 10;
+
+        System.out.print(n1+" ,"+n2);
+
+        for(int i=2; i<count; i++){
+            sum=n1+n2;
+            System.out.print(", "+sum);
+            n1=n2;
+            n2=sum;
+        }
+    }
+}

Java/SwapNoUsingArthOperator.java

@@ -0,0 +1,16 @@
+public class SwapNoUsingArthOperator {
+    public static void main(String[] args) {
+        int a=10;
+        int b=20;
+
+        System.out.println("Before Swap" +a+ "," +b);
+
+        a = a^b; //30
+        b = a^b;
+        a = a^b;
+
+        System.out.println("After Swap" +a+ "," +b);
+
+
+    }
+}

Java/SwapTwoNo.java

@@ -0,0 +1,14 @@
+class SwapTwoNo{
+    public static void main(String args[]) {
+        int a = 10;
+        int b = 20;
+       int temp;
+        System.out.println("Before Swap:" +a+ " , " +b);
+
+        temp = a;
+        a = b;
+        b=temp;
+
+        System.out.println("After Swap" +a+ ", " +b);
+    }
+}

Java/SwapTwoNoWithUsing3rdVariable.java

@@ -0,0 +1,13 @@
+public class SwapTwoNoWithUsing3rdVariable {
+    public static void main(String[] args) {
+        int a = 10;
+        int b = 20;
+        System.out.println("Before Swap:" +a+ " , " +b);
+
+        a = a+b;  //30
+        b = a-b;  //10
+        a = a-b;  //20
+
+        System.out.println("After Swap:" +a+ " , "+b);
+    }
+}

Java/demo.java

@@ -0,0 +1,5 @@
+class demo{
+    public static void main(String[] args){
+        System.out.println("Hello world java");
+    }
+}