public class Merchandise {
String name="aa";
String id="one";
int count=10;
double price =99.88;
String kind;
};
string 就是引用类型:
import java.util.Arrays;
public class SuperMarket {
public static void main(String[] args) {
//创建一个Merchandise的实例,用m1指向它
Merchandise m1 = new Merchandise();
System.out.println(m1.price);
//修改实例属性
m1.price=88.88;
System.out.println(m1.kind);
m1.kind.length();
Merchandise m5 = m1;
System.out.println(m1.price);
System.out.println(m1);
System.out.println(m5);
}
}
"C:Program FilesJavajdk-11.0.2binjava.exe" "-javaagent:D:IntelliJ IDEA Community Edition 2021.3.1libide
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