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1

int a = 1;
int b = a;
b = 2;
System.out.println("a=" + a);
System.out.println("b=" + b);

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public static void change(int b) {
b = 2;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
int a = 1;
change(a);
System.out.println("a=" + a);

}


2 ºÍ1²î²»¶à£¬ÎÒÃÇ»»³ÉString À´¿´¿´£¬String¿É²»ÊÇ»ù±¾ÀàÐÍŶ¡£
public static void main(String[] args) {
// TODO Auto-generated method stub
String s1 = "abc";
String s2 = s1;
s2 += "d";
System.out.println("s1=" + s1);
System.out.println("s2=" + s2);

}
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public static void change(String s2) {
s2 += "d";
}
public static void main(String[] args) {
// TODO Auto-generated method stub
String s1 = "abc";
change(s1);
System.out.println("s1=" + s1);

}

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int[] a = new int[1];


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