java 如何在java中将向量转换为字符串？
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How to convert vector to string in java?
提问by Rory Lester
I have a vectorand it containsthe value 5. When i do System.out.Println(vectorVariable), the value outputted is [5]. I want to convert the vectorVariable to string (without the []). I have tried vectorVariable.toString(), which converts it to a string but it still retains the []. So i guess i what i really want is the first element to be returned as a string. How is this possible?
我有一个vector和它contains的value 5. 当我这样做时System.out.Println(vectorVariable)，输出的值是[5]. 我想将 vectorVariable 转换为字符串（没有 []）。我试过了vectorVariable.toString()，它把它转换成一个字符串，但它仍然保留了 []。所以我想我真正想要的是作为字符串返回的第一个元素。这怎么可能？
I want to store the value of the vector inside a string without the [].
我想将向量的值存储在没有 [] 的字符串中。
回答by Dan W
Try System.out.println(vector.get(0)). You are trying to print the entire vector, whereas this will only print the selected index, in this case 0.
试试System.out.println(vector.get(0))。您正在尝试打印整个向量，而这只会打印选定的索引，在本例中为 0。
回答by Oscar Castiblanco
you can try:
你可以试试：
for (String string : vectorVariable) {
System.out.println(string);
}
回答by Vincent Ramdhanie
What you need is to get the value from the vector, rather than print the vector itself.
您需要的是从向量中获取值，而不是打印向量本身。
System.out.println(vectorVariable.get(0));
This gets the first value and prints it. Of course you need to verify that the vector contains a value before you do this.
这将获取第一个值并打印它。当然，在执行此操作之前，您需要验证向量是否包含一个值。
