使用方法访问数组 [英] Accessing arrays with methods

问题描述

大家好我刚刚开始学习Java，我想知道如何从另一个方法访问一个方法中声明的数组？
设计如下所示：

Hi guys i'm just starting to learn Java, and I wondering how can I access an array that was declared in a method from another method? The design look like this:

public class Arrays{
  int arraysize = 2;

     public void initializeArray(){
    float array[] = new float[arraySize]; // Declare array  
     }

     public void accessArray(){
     // I want to access the array from this method.
     }

}

推荐答案

了解java中的变量范围。这是我在快速Google搜索中找到的链接。 http://www.java-made-easy.com/variable-scope.html

Read about scope of variables in java. This is link I could find on quick Google search. http://www.java-made-easy.com/variable-scope.html

您可以在类级别声明数组，然后可以在所有方法中访问它。

You can declare the array at class level then it is accessible in all methods.

    public class Arrays {
    int arraysize = 2;
    private float[] array = null;

    public void initializeArray() {
        array = new float[arraySize]; // Declare array
    }

    public void accessArray() {
        // access array here.
    }
}

或者您可以在方法中传递变量。

Or You can pass the variables in method.

    public class Arrays {
    int arraysize = 2;

    public void initializeArray() {
        float[] array = new float[arraySize]; // Declare array
        accessArray(array);
    }

    public void accessArray(float[] array) {
        // access array here.
    }
}

鉴于信息量，我有疑问，方法1似乎优于2。

Given the amount of information, I have from question, approach 1 seems better than 2.

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