经典ArrayCopy

Student类

package com.arraycopy;

public class Student {

private int age;
private String name;

public Student(int age, String name) {
this.age = age;
this.name = name;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

@Override
public String toString() {
return "姓名: " + this.name + "\t" + "年龄: " + this.age;
}
}


main方法测试

TestArrayCopy类


package com.arraycopy;

public class TestArrayCopy {


public static void main(String[] args) {

Student[] s = { new Student(20, "test1"), new Student(26, "test2") };
Student[] stu = new Student[2];
System.arraycopy(s, 0, stu, 0, s.length);
int i;
for (i = 0; i < s.length; i++) {
System.out.println(stu[i]);
}

System.out.println("----------------------------");

stu[0].setAge(100);
stu[0].setName("test3");

int j;
for (j = 0; j < s.length; ++j) {
System.out.println(s[j]);
}

System.out.println("----------------------------");

int k;
for (k = 0; k < s.length; ++k) {
System.out.println(stu[k]);
}
}
}