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 程式師世界 >> 編程語言 >> JAVA編程 >> 關於JAVA >> java中的傳值與傳reference

java中的傳值與傳reference

編輯:關於JAVA

//: c03:Assignment.Java

// Assignment with objects is a bit tricky.

// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002

// www.BruceEckel.com. See copyright notice in CopyRight.txt.

// edit by nx.

class Number {

int i;

}

public class Assignment {

public static void main(String[] args) {

Number n1 = new Number();

Number n2 = new Number();

n1.i = 9;

n2.i = 47;

System.out.println("1: n1.i= " + n1.i + ", n2.i= " + n2.i);

n1 = n2;

System.out.println("2: n1.i= " + n1.i + ", n2.i= " + n2.i);

n1.i = 27;

System.out.println("3: n1.i= " + n1.i + ", n2.i= " + n2.i);

}

}

RUN:

1: n1.i= 9, n2.i= 47

2: n1.i= 47, n2.i= 47

3: n1.i= 27, n2.i= 27

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