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Java´úÂë
public class ParamTest {
// ³õʼֵΪ0
protected int num = 0;
// Ϊ·½·¨²ÎÊýÖØи³Öµ
public void change(int i) {
i = 5;
}
// Ϊ·½·¨²ÎÊýÖØи³Öµ
public void change(ParamTest t) {
ParamTest tmp = new ParamTest();
tmp.num = 9;
t = tmp;
}
// ¸Ä±ä·½·¨²ÎÊýµÄÖµ
public void add(int i) {
i += 10;
}
// ¸Ä±ä·½·¨²ÎÊýÊôÐÔµÄÖµ
public void add(ParamTest pt) {
pt.num += 20;
}
public static void main(String[] args) {
ParamTest t = new ParamTest();
System.out.println("²ÎÊý--»ù±¾ÀàÐÍ");
System.out.println("ÔÓеÄÖµ£º" + t.num);
// Ϊ»ù±¾ÀàÐͲÎÊýÖØи³Öµ
t.change(t.num);
System.out.println("¸³ÖµÖ®ºó£º" + t.num);
// ΪÒýÓÃÐͲÎÊýÖØи³Öµ
t.change(t);
System.out.println("ÔËËãÖ®ºó£º" + t.num);
System.out.println();
t = new ParamTest();
System.out.println("²ÎÊý--ÒýÓÃÀàÐÍ");
System.out.println("ÔÓеÄÖµ£º" + t.num);
// ¸Ä±ä»ù±¾ÀàÐͲÎÊýµÄÖµ
t.add(t.num);
System.out.println("¸³ÒýÓúó£º" + t.num);
// ¸Ä±äÒýÓÃÀàÐͲÎÊýËùÖ¸Ïò¶ÔÏóµÄÊôÐÔÖµ
t.add(t);
System.out.println("¸ÄÊôÐÔºó£º" + t.num);
}
}
public class ParamTest {
// ³õʼֵΪ0
protected int num = 0;
// Ϊ·½·¨²ÎÊýÖØи³Öµ
public void change(int i) {
i = 5;
}
// Ϊ·½·¨²ÎÊýÖØи³Öµ
public void change(ParamTest T) {
ParamTest tmp = new ParamTest();
tmp.num = 9;
T = tmp;
}
// ¸Ä±ä·½·¨²ÎÊýµÄÖµ
public void add(int i) {
i += 10;
}
// ¸Ä±ä·½·¨²ÎÊýÊôÐÔµÄÖµ
public void add(ParamTest pt) {
pt.num += 20;
}
public static void main(String[] args) {
ParamTest t = new ParamTest();
System.out.println("²ÎÊý--»ù±¾ÀàÐÍ");
System.out.println("ÔÓеÄÖµ£º" + t.num);
// Ϊ»ù±¾ÀàÐͲÎÊýÖØи³Öµ
t.change(t.num);
System.out.println("¸³ÖµÖ®ºó£º" + t.num);
// ΪÒýÓÃÐͲÎÊýÖØи³Öµ
t.change(t);
System.out.println("ÔËËãÖ®ºó£º" + t.num);
System.out.println();
t = new ParamTest();
System.out.println("²ÎÊý--ÒýÓÃÀàÐÍ");
System.ou
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