如何从主方法调用非静态方法? [英] How do I call a non static method from a main method?
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问题描述
例如,我正在尝试做这样的事情
For example, I am trying to do something like this
public class Test {
public static void main(String args[]) {
int[] arr = new int[5];
arrPrint(arr);
}
public void arrPrint(int[] arr) {
for (int i = 0; i < arr.length; i++)
System.out.println(arr[i]);
}
}
我收到一条错误消息,告诉我我无法从静态环境中引用非静态变量.因此,如果这是真的,我将如何在 main 中使用非静态方法?
I get an error telling me that I can't reference non-static variables from static enviorments. So if that is true how would I ever utilize a non static method inside of a main?
推荐答案
你不能.非静态方法是必须在 Test 类的实例上调用的方法;创建一个 Test 实例以在您的主要方法中使用:
You can't. A non-static method is one that must be called on an instance of your Test class; create an instance of Test to play with in your main method:
public class Test {
public static void main(String args[]) {
int[] arr = new int[5];
arr = new int[] { 1, 2, 3, 4, 5 };
Test test = new Test();
test.arrPrint(arr);
}
public void arrPrint(int[] arr) {
for (int i = 0; i < arr.length; i++)
System.out.println(arr[i]);
}
}
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