参数传递

/**Argtest.java
  *关于成员方法的参数，参数传递是“传值”，如果参数是引用，传的就是引用的值，即数组或对象的地址
  */
class People
{
	String str;
	private int age;
	public int getAge()
	{
		return age;
	}
	public void setAge(int age)
	{
		this.age=age;
	}
}

public class Argtest
{
	int i = 20;
	String str="good";
	char[] ch={'a','b','c'};
	public void change(String str1, char ch1[],People p,int s)
	{
		s = 30;
		str1="test ok";
		ch1[0]='g';
		p.setAge(20);
	}
	public static void main(String args[])
	{
		Argtest a=new Argtest();
		People p=new People();
		p.str = "asdsa";
		p.setAge(10);
		a.change(a.str,a.ch,p,a.i);
		System.out.println("str= "+a.str);
		System.out.print("ch= ");
		System.out.println(a.ch);
		System.out.println("p.age="+p.getAge());
		System.out.println("a.i="+a.i);
	}	
}