UPDATE

src/App.vue

@@ -21,7 +21,7 @@ export default {
       ctx.font = "bold 200px sans-serif";
       ctx.textAlign = "center";
       ctx.textBaseline = "middle";
-      ctx.fillText("Hi", canvas.width / 2, canvas.height / 2);
+      ctx.fillText("CSDN", canvas.width / 2, canvas.height / 2);
 
       requestAnimationFrame(render);
     };

src/a.java

+public static void main(String[] args) {
+    
+}
\ No newline at end of file

src/a.py

+print
\ No newline at end of file