diff --git a/src/main/java/com/never/BitOperation.java b/src/main/java/com/never/BitOperation.java
new file mode 100644
index 0000000..05f6b50
--- /dev/null
+++ b/src/main/java/com/never/BitOperation.java
@@ -0,0 +1,23 @@
+package com.never;
+
+public class BitOperation {
+    public static void main(String[] args) {
+        int a = 2 ;
+        int b = ~a+1;
+        int c = b>>2;
+        int d = b>>>2;
+        printBit(a);
+        printBit(b);
+        System.out.println(b);
+        printBit(c);
+        printBit(d);
+        System.out.println(c);
+        System.out.println(d);
+    }
+    private static void printBit(int num){
+        for(int i = 31; i >= 0; i--){
+            System.out.print((num & (1<<i)) == 0?'0':'1');
+        }
+        System.out.println();
+    }
+}
diff --git a/target/classes/com/never/BitOperation.class b/target/classes/com/never/BitOperation.class
new file mode 100644
index 0000000..5b406ad
Binary files /dev/null and b/target/classes/com/never/BitOperation.class differ