Question: I'm writing a tester for myself that is meant to work with different classes whose names are given in the form of a string. Currently, my setup looks like this:

```java
public class Tester {

    public static void main(String[] args) throws /** some exceptions **/ {

        Class<?> class = Class.forName("Ex");
        Method main = class.getDeclaredMethod("main", String[].class);
        main.invoke(null);

    }

}
//yes, these are in separate files
public class Ex {

    public static void main(String[] args) {

        //...

    }

}

```

At runtime, I'm thrown an exception with the following stack trace:

```
Exception in thread "main" java.lang.IllegalArgumentException: wrong number of arguments
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at Tester.main(Tester.java:56)

```

Answer: 
You just have to set 'align' property to "stretch" in v-row:

```
<template>
  <div>
    <v-row align="stretch" class="ma-2">
      <v-col md="4" class="pa-3" v-for="i in items" :key="i.id">
        <Item :show-buttons="true" :item="i" />
      </v-col>
    </v-row>
  </div>
</template>

```
`class="fill-height"` on the cards works for me:

```html
<v-row>
  <v-col v-for="i in 8" :key="i" lg="4">
     <v-card class="fill-height">...</v-card>
  </v-col>
</v-row>

```