java：ArrayList循环遍历的俩种方法使用
package collection;
import java.util.*;
public class NewArrayList {
public static void main(String[] args) {
List<Student> students = new ArrayList<Student>();
for (int i = 0; i < 6; i++) {
students.add(new Student("Happy"+i,"male"+i,20+i));
}
print(students);
print2(students);
}
//循环遍历①for
public static void print(List<Student> newList){
System.out.println("总数据："+newList.size());
Student student;
for (int i = 0; i < newList.size(); i++) {
student = (Student)newList.get(i);
System.out.println(student.toString());
}
}
//循环遍历①Iterator
public static void print2(List<Student> newList){
System.out.println("总数据："+newList.size());
Iterator<Student> iterator = newList.iterator();
Student student;
while (iterator.hasNext()){
student = (Student)iterator.next();
System.out.println(student.toString());
}
}
}
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package com.njty.util;
public class Test {
private static final double EARTH_RADIUS = 6378137;
private static double rad(double d)
{
return d * Math.PI / 180.0;
}
......
当两个进程在进行远程通信时，彼此可以发送各种类型的数据。无论是何种类型的数据，都会以二进制序列的形式在网络上传送。发送方需要把这个Java对象转换为字节序列，才能在网络上传送；接收方则需要把字节序列再恢复为Java对象。
把Java对象转换为字节序列的过程称为对象的序列化。
把字节序列恢复为Java对象的� ......
package arrays.compara;
import java.util.Arrays;
public class Student {
public static void main(String[] args) {
Stu[] stus = new Stu[]{
new Stu(156,34,"ad"),
new Stu(153,24,"cc"),
new Stu(126,37,"ab"),
......
package arrays.myArray;
import java.util.Scanner;
public class SortObject {
private static int intercePosition = 0; // 记录单个运算数据的长度
private static int[] intercePositionIndex = null; // 记录“（”的下标
private static int[] intercePositionEnd = null; // 记录 ......
