java 如何从Java中的同一类调用方法？
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How to call a method from the same class in Java?
提问by Abdul
How can I call getDummy from main? I need this so I can pass dummy to a method in another class.
如何从 main 调用 getDummy？我需要这个，所以我可以将 dummy 传递给另一个类中的方法。
public class Test {
public static void main(String[] args) {
private int dummy = 0;
}
public int getDummy() {
return dummy;
}
}
回答by ΦXoc? ? Пepeúpa ツ
getDummyis an instance method so you need the instance
getDummy是一个实例方法，所以你需要实例
public static void main(String[] args) {
Test t = new Test();
t.getDummy();
}
and this belongs to the class
这属于班级
private int dummy = 0;
your final code could look like>
你的最终代码可能看起来像>
public class Test {
private int dummy = 0;
public static void main(String[] args) {
Test t = new Test();
t.getDummy();
}
public int getDummy() {
return dummy;
}
}
回答by phanhien1701
sry, my english very bad, but i think i can help you. first, you create a public variable out of main, in you code, you only create a local variable. next, in your main, you type : "getDummy();". good luck
对不起，我的英语很差，但我想我可以帮助你。首先，您从 main 创建一个公共变量，在您的代码中，您只创建一个局部变量。接下来，在您的主要内容中，您输入：“getDummy();”。祝你好运
回答by Haven Lin
you should be declare target object, and initialization, then you can use getDummy(), or you can modify getDummy()method to static .
你应该声明目标对象，并初始化，然后你可以使用getDummy()，或者你可以修改getDummy()方法为静态。
回答by Binyamin Regev
Is this what you mean?
你是这个意思吗？
public class Test {
private int dummy = 0;
public static void main(String[] args) {
Test test = new Test();
int dummy = test.getDummy();
}
public int getDummy() {
return dummy;
}
}
I assume private int dummy = 0;is a property (variable) of Testclass. Calling a non-staticmethod from a staticmethod is not allowed. You create an instance of your class in the staticmethod and can call any of its publicmethods.
我假设private int dummy = 0;是类的属性（变量）Test。不允许non-static从static方法调用方法。您可以在static方法中创建类的实例，并且可以调用其任何public方法。
