Added Binary to Decimal Conversion Program

iamarav · iamarav · commit 8aece92e3958 · 2019-02-03T01:17:25.000+05:30
diff --git a/Other-Java-Programs/BinaryToDecimal.java b/Other-Java-Programs/BinaryToDecimal.java
@@ -0,0 +1,73 @@
+import java.util.Scanner;
+
+public class BinaryToDecimal {
+	
+	static int temp = 0;
+
+	public static void main(String[] args) {
+		
+		int binaryInput;
+		
+		System.out.println("Program to convert Binary Code to Decimal.\n---");
+		
+		Scanner sm = new Scanner(System.in);
+		
+		System.out.print("Enter the binary code (Make sure it contains only 0's and 1's): ");
+		
+		binaryInput = sm.nextInt();
+		
+		if(checkBinary(binaryInput)) {
+			end();
+		}
+		else {
+			binaryConvert(binaryInput);
+			System.out.println(temp);
+			sm.close();
+			end();
+			}
+	}
+		
+		private static int binaryConvert(int num) {
+			
+			int  n,x=0;
+		
+				while (num>0) {
+					n = (int) java.lang.Math.pow(2, x);
+					temp = temp + (num%10) * n;
+					x=x+1;
+					num=num/10;
+				}
+				return temp;
+		}
+		
+		private static boolean checkBinary(int n) {
+			int x;
+			boolean flag = false;
+			while(n>0) {
+				x=n%10;
+				
+				if(flag ==true) {
+					System.out.println("Validation Error: The Entered String is not a Binary Number.");
+					break;
+					}
+				else {
+					if(x==1 || x==0) {
+
+					}
+					else {
+						flag = true;
+					}
+				}
+				n=n/10;
+			}
+			
+			return flag;
+			
+		}
+		
+		private static void end() {
+			System.out.println("---\nThe Program has ended.");
+			System.exit(0);
+		}
+
+}
