许心怡修改结果

src/computer/com.java

@@ -18,6 +18,7 @@ class JS extends JFrame implements ActionListener {
     Double sum;
     String lastOperator = "=";
     public JS() {
+
         setBounds(100, 100, 400, 400);
         setTitle("计算器");
         JMenuBar menubar = new JMenuBar();