Java 创建深拷贝
创建深拷贝
实例源码：
源代码：
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public class CloneTest23
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{5
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public static void main(String[] args)7
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{//from N o w J a v a . c o m9
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Employee emp1 = new Employee("M", "A");11
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emp1.setSalary(40000.0);13
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emp1.address = new Address("1300 N. Main Street","New York", "CA", "99999");15
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Employee emp2 = (Employee)emp1.clone();17
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System.out.println("**** after cloning ****\n");20
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printEmployee(emp1);22
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printEmployee(emp2);24
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emp2.setLastName("S");27
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emp2.address = new Address("2503 N. 6th Street","L.A.", "CA", "93722");29
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/*来自 31
时代Java公众号*/32
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System.out.println(34
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"**** after changing emp2 ****\n");36
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printEmployee(emp1);38
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printEmployee(emp2);40
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}43
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private static void printEmployee(Employee e)46
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{48
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System.out.println(e.getFirstName() + " " + e.getLastName());50
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System.out.println(e.address.getAddress());52
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System.out.println("Salary: " + e.getSalary());54
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System.out.println();56
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}58
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}61
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class Employee implements Cloneable64
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{66
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private String lastName;68
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private String firstName;70
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private Double salary;72
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public Address address;75
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public Employee(String lastName, String firstName)78
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{80
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this.lastName = lastName;82
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this.firstName = firstName;84
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this.address = new Address();86
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}88
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public String getLastName()91
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{93
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return this.lastName;95
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}97
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public void setLastName(String lastName)100
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{102
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this.lastName = lastName;104
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}106
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public String getFirstName()109
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{111
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return this.firstName;113
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}115
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public void setFirstName(String firstName)118
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{120
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this.firstName = firstName;122
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}124
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public Double getSalary()127
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{129
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return this.salary;131
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}133
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public void setSalary(Double salary)136
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{138
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this.salary = salary;140
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}142
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public Object clone()145
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{147
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Employee emp;149
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try151
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{153
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emp = (Employee) super.clone();155
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emp.address = (Address)address.clone();157
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}159
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catch (CloneNotSupportedException e)161
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{163
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return null; // will never happen165
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}167
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return emp;169
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}171
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public String toString()174
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{176
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return this.getClass().getName() + "["178
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+ this.firstName + " "180
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+ this.lastName + ", "182
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+ this.salary + "]";184
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}186
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}188
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class Address implements Cloneable191
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{193
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private String street;195
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private String city;197
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private String state;199
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private String zipCode;201
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public Address()204
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{206
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this.street = "";208
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this.city = "";210
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this.state = "";212
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this.zipCode = "";214
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}216
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public Address(String street, String city,219
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String state, String zipCode)221
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