[原创] java中的进制BigInteger十分的强大,而且好用,他可以表示任意大的整数,同时还可以进行进制转换,十分的方便, 代码示例: package com.jiajia.demo_1; import java.math.BigInteger;//导入该包 public class Demo { public static void main(String[] args) { String str = ).toString(); System.out.println(str); } }

原文:字符串string和内存流MemoryStream及比特数组byte[]互转   字符串string和内存流MemoryStream及比特数组byte[]互转比较 定义string变量为str,内存流变量为ms,比特数组为bt 1.字符串转比特数组(1)byte[] bt=System.Text.Encoding.Default.GetBytes("字符串");(2)byte[] bt=Convert.FromBase64String("字符串"); 2.字符

string与int互转 #string到int int,err:=strconv.Atoi(string) #string到int64 int64, err := strconv.ParseInt(string, 10, 64) #int到string string:=strconv.Itoa(int) #int64到string string:=strconv.FormatInt(int64,10) int64与[]byte互转 package main import ( "fmt"

using System; using System.IO; using System.Runtime.Serialization; using System.Runtime.Serialization.Formatters.Binary; namespace Dscf.Global.Utils {     public class ObjectUtils     {         /// <summary>         /// 对像转成 byte 数组         /// <

byte 转file String filepath="D:\\"+getName();          File file=new File(filepath);          if(file.exists()){              file.delete();          }          FileOutputStream fos = new FileOutputStream(file);             fos.write(data,0,data,

String转换为byte数组用byte[] arr = System.Text.Encoding.Default.GetBytes("abcde") byte数组转换为String用:string str = System.Text.Encoding.Default.GetString(arr);

string类型转成byte[]: byte[] byteArray = System.Text.Encoding.Default.GetBytes ( str ); byte[]转成string: string str = System.Text.Encoding.Default.GetString ( byteArray ); string类型转成ASCII byte[]: (" 转成 byte[] = new byte[]{ 0x30,0x31}) byte[] byteArray = S

相比于encoding, 使用unsafe性能更高 type MyStruct struct { A int B int } var sizeOfMyStruct = int(unsafe.Sizeof(MyStruct{})) func MyStructToBytes(s *MyStruct) []byte { var x reflect.SliceHeader x.Len = sizeOfMyStruct x.Cap = sizeOfMyStruct x.Data = uintptr(uns

public static int ToInt32(params byte[] v) { ; var len = v.Length; ) { len = ; } ; i < len; i++) { r |= v[i] << * (len - i - ); } return r; } public static byte[] ToBytes(int v) { ; ; i < ; i++) { * i < ) { len = i + ; break; } } var bs = n

public byte[] StreamToBytes(Stream stream) { byte[] bytes = new byte[stream.Length]; stream.Read(bytes, , bytes.Length); stream.Seek(, SeekOrigin.Begin);// 设置当前流的位置为流的开始 return bytes; } public Stream BytesToStream(byte[] bytes) { Stream stream = new

严正声明:作者:psklf出处: http://www.cnblogs.com/psklf/p/5889978.html欢迎转载,但未经作者同意,必须保留此段声明:必须在文章中给出原文连接:否则必究法律责任! Bitmap->byte[] int bytes = bmp.getByteCount(); ByteBuffer buf = ByteBuffer.allocate(bytes); bmp.copyPixelsToBuffer(buf); byte[] byteArray = buf.a

1.string 转 byte[] //为UTF8编码 byte[] midbytes=isoString.getBytes("UTF8"); //为ISO-8859-1编码,其中ISO-8859-1为单字节的编码 byte[] isoret = srt2.getBytes("ISO-8859-1"); 2.byte[]转string String isoString = new String(bytes,"ISO-8859-1"); Strin

1.string 转 byte[]byte[] midbytes=isoString.getBytes("UTF8");//为UTF8编码byte[] isoret = srt2.getBytes("ISO-8859-1");//为ISO-8859-1编码其中ISO-8859-1为单字节的编码2.byte[]转stringString isoString = new String(bytes,"ISO-8859-1");String srt2=n

User user=new User(); user.setId("bonnie"); user.setAge("10"); //Object转byte[] ByteArrayOutputStream byteArrayOutputStream =new ByteArrayOutputStream(); ObjectOutputStream objectOutputStream=new ObjectOutputStream(byteArrayOutputStream

//wav转byte public void WavToByte() { Byte[] bs; FileStream fs = new FileStream(@"C:\1.wav", FileMode.Open, FileAccess.Read); bs = new Byte[fs.Length]; fs.Read(bs, , (int)fs.Length); fs.Close(); } //byte转wav public void ByteToWav(Byte[] bs) { Fil

/** * 获得指定文件的byte数组 */ private byte[] getBytes(String filePath){ byte[] buffer = null; try { File file = new File(filePath); FileInputStream fis = new FileInputStream(file); ByteArrayOutputStream bos = new ByteArrayOutputStream(1000); byte[] b = new

1.String -->byte[] String str = "中国"; byte[] bys = str.getBytes(); Arrays.toString(bys); 2.byte[] --> String String string = new String(bys);

旧代码 public static void main(String[] args) { SecureRandom random = new SecureRandom(); byte[] key = new byte[16]; random.nextBytes(key); BigInteger bigInteger = new BigInteger(key); System.out.println("old:" + Arrays.toString(key)); System.out.p

原文:http://wuxiaolong.me/2015/08/10/Drawable-to-Bitmap/ Drawable互转Bitmap Drawable转Bitmap 1234 Resources res = getResources();Drawable drawable = res.getDrawable(R.drawable.myimage);BitmapDrawable bd = (BitmapDrawable) d;Bitmap bm = bd.getBitmap(); 123

DataTabe 对象在很多地方都会用到,特别是在Web Service.Socket等需网络传输的地方. 但是在有些地方,如果直接传递的话,程序可能会报告DataTable无法序列化错误. 解决问题的方法,是对DataTable进行序列化. FCL提供的用于序列化的方法组要有三种: 1.XML Serialization 2.Binary Serialization 3.SOAP Serialization 感兴趣的可查下相关的具体操作文章,如 Introducing Serializatio

第一部分: 这两个类位于java.math包内,要使用它们必须在类前面引用该包:import java.math.BigInteger;和import java.math.BigDecimal; BigInteger和BigDecimal分别表示不可变的任意精度的整数和不可变的有符号的任意精度的十进制数(浮点数).主要用于高精度计算中.这两个类使得java中的大数,高精度运算变得很简单. 下面从几个方面对BigInteger和BigDecima做一个简单的比较: 一.常量 BigInteger: