diff --git a/src/main/java/com/zeekling/integer/IntegerTest.java b/src/main/java/com/zeekling/integer/IntegerTest.java
new file mode 100644
index 0000000..591c306
--- /dev/null
+++ b/src/main/java/com/zeekling/integer/IntegerTest.java
@@ -0,0 +1,18 @@
+package com.zeekling.integer;
+
+
+public class IntegerTest {
+
+    public static void main(String[] args) {
+
+        int a = 10;
+        // 方法内定义的变量没有初始值，必须要进行初始化。 类中定义的变量可以不需要赋予初始值，默认初始值为0。
+        int b = 0;
+        int c;
+        if (a > 50) {
+            b = 9;
+        }
+        c = b + a;
+        System.out.println("c=" + c);
+    }
+}