diff --git "a/31 \346\235\216\346\254\243/20230513 \344\275\234\344\270\232.md" "b/31 \346\235\216\346\254\243/20230513 \344\275\234\344\270\232.md"
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@@ -0,0 +1,39 @@
+ 写一个求和的方法，getSum(int a,int b); 
+main方法中，让使用户输入两个整数，调用getSum,输出这两个数的和，因为用户可能坐输入不是整数的值，所以要处理异常
+
+```java
+import java.util.Scanner;
+
+public class Sum {
+    public static int getSum(int a,int b){
+        return a+b;
+    }
+    public static void main(String[] args) {
+        while (true) {
+            Scanner sc = null;
+            try {
+                sc = new Scanner(System.in);
+                System.out.println("请输入第一个整数:");
+                int a = sc.nextInt();
+                while (true) {
+                    try {
+                        System.out.println("请输入第二个整数:");
+                        int b = sc.nextInt();
+                        System.out.println(getSum(a, b));
+                        break;
+                    } catch (Exception e) {
+                        System.out.println("输入有误，非整数范围");
+                        sc.next();
+                    }
+                }
+                break;
+            } catch (Exception e) {
+                System.out.println("输入有误，非整数范围");
+                sc.next();
+            }
+        }
+    }
+}
+
+```
+