作为参数的类的对象。 [英] Object of a class as a parameter.

问题描述

import java.io.*;
class Complex
{
	int a, b;
	BufferedReader br;
	void accept()
	{
		br = new BufferedReader (new InputStreamReader(System.in));
		try
		{
			System.out.println("Enter two numbers");
			int a= Integer.parseInt(br.readLine());
			int b= Integer.parseInt(br.readLine());
		}
		catch (IOException ioe)
		{
		}
	}
	void display()
	{
		System.out.println("Number 1 = " + a);
		System.out.println("Number 2 = " + b);
	
	
	}
	void add(Complex c1 , Complex c2)
	{
		a=c1.a+c2.a;
		b=c1.a+c2.a;
	}
	public static void main(String [] args)
	{
		Complex c1 = new Complex();
		Complex res = new Complex();
		Complex c2 = new Complex();
		c1.accept();
		c2.accept();
		res.add(c1,c2);
		res.display();

	}
		

}

此代码正在编译并正在运行。但是输出是不可取的。

添加2个数字不会被打印。

当我调用res.display时，打印的内容是

小时= 0

分钟= 0

秒= 0

有人可以告诉我原因吗？



我尝试过：



请帮我解决这个问题。

谢谢

This code is getting compiled and its running. But the output is not desired .
The addition of the 2 numbers is not getting printed.
when i call res.display the contents which is getting printed is
hour=0
minutes=0
seconds=0
Can anyone tell me why?

What I have tried:

Please help me resolve this.
Thanks

推荐答案

是的，因为你从未在对象中为a和b设置任何值，你只需在accept方法中设置本地值。



并且您不会通过在此处针对您所犯的每个基本错误发布问题来学习Java。我建议你去 Java™教程 [ ^ ]并以结构合理的方式学习。

Yes, because you never set any values for a and b in your objects, you just set local values in the accept method.

And you are not going to learn Java by posting questions here for every basic mistake you make. I suggest you go to The Java™ Tutorials[^] and learn it in a properly structured way.

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