java中参数传递

package org.iteye.bbjava.test;

public class NewArgumentTest {
	public Integer i = 0;
	public String str = "abc";

	class IntAndStr {

		Integer i = 1;
		String str = "abcd";

		public IntAndStr(Integer i1, String str1) {
			i = i1;
			str = str1;
		}

		public String toString() {
			return "IntAndStr:" + " i:" + i + ", str:" + str;
		}
	}

	public IntAndStr ias = new IntAndStr(i, str);

	public void testInt(Integer i) {
		i = new Integer(1);
	}

	public void testStr(String str) {
		str = "str";
	}

	public void testIaS(IntAndStr ias) {
		ias = new IntAndStr(2, "abcdr");
	}

	public static void main(String[] args) {
		NewArgumentTest nat = new NewArgumentTest();

		nat.testInt(nat.i);
		System.out.println("nat.i:"+nat.i);

		nat.testStr(nat.str);
		System.out.println("nat.str:"+nat.str);

		nat.testIaS(nat.ias);
		System.out.println("nat.ias:"+nat.ias);
	}
}

output:

引用

nat.i:0
nat.str:abc
nat.ias:IntAndStr: i:0, str:abc