在两个主类之间传递字符串变量，并将其传递给字符串数组

public class ClassA {
    private String str;

    public ClassA(String str) {
        this.str = str;
    }

    public String getString() {
        return str;
    }
}

public class ClassB {
    public void transferString(ClassA classA, String[] array) {
        String str = classA.getString();
        array[0] = str;
    }
}

public class Main {
    public static void main(String[] args) {
        ClassA classA = new ClassA("Hello, World!");
        String[] array = new String[1];
        
        ClassB classB = new ClassB();
        classB.transferString(classA, array);
        
        System.out.println("String in array: " + array[0]);
    }
}