java对象实例化的方式
2021-07-08 02:05
*/
public class Book implements Cloneable, Serializable {
private static final long serialVersionUID = 1L;
private Integer serialNum; // 序列号
private String name; // 图书名称
public Book() {
System.out.println("默认构造函数");
}
public Book(Integer serialNum, String name) {
System.out.println("带参数构造函数");
this.serialNum = serialNum;
this.name = name;
}
public int getSerialNum() {
return serialNum;
}
public void setSerialNum(int serialNum) {
this.serialNum = serialNum;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
if (name == null) {
return "书籍属性还未填写";
}
return serialNum + " : " + name;}
@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
}
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