-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathReadByte.java
More file actions
119 lines (103 loc) · 4.15 KB
/
ReadByte.java
File metadata and controls
119 lines (103 loc) · 4.15 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
package StreamFile;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.util.Map;
import java.util.Scanner;
public class ReadByte {
public static void main(String[] args) {
/*
* Unicode���ɶ���ֽڹ���
*
* java.io��������Ƕ��� �����·����------>�û�����Ŀ¼
* ���ڷ�б����Java����ת���ַ������ȷ����Windows����е�·����ʹ��'\\'
*
* */
//�õ�Java���ļ��ָ��
String separator=java.io.File.separator;
//System.in:�Ӽ����϶�����Ϣ
InputStreamReader inputR=new InputStreamReader(System.in);
String path= System.getProperty("src/TwoChapter1StreamFile/readme.txt");
System.out.println(path);////////////////???????????�õ�null
try {
//�����·��
InputStream in=new FileInputStream("src\\readme.txt");
//read()��������һ��Unicode��Ԫ�����ߵ��ļ�ĩβ����-1
System.out.println("������"+in+" ");
/*while(in.read()!=-1){
System.out.println(in.read());
}*/
//��BufferedReader���ı�����
BufferedReader readerIn=new BufferedReader(new InputStreamReader(in, "gbk"));
System.out.println("BufferedReader���ı������ݣ�");
while(readerIn.readLine()!=null){
System.out.println(readerIn.readLine());
}
//readerIn.close();
//����-------��Scanner���ı�����
System.out.println("scanner���ı����룺����");
Scanner sin=new Scanner(in);
System.out.println("sinhasnextline---��"+sin.hasNextLine());
while(sin.hasNextLine()){
System.out.println(sin.nextLine());
}
sin.close();
/*
* java�ַ���
*
* */
//�ض�ʵ���еĿ����ַ���
Map<String,Charset> charsets= Charset.availableCharsets();
for(String name:charsets.keySet()){
//System.out.println(name);
}
//����
Charset c=Charset.forName("gbk");
String name="������";
ByteBuffer buffer=c.encode(name);
byte[] bytes=buffer.array();
System.out.println("��gbk�������ֽ����У�");
for(byte b2:bytes){
System.out.print(b2+" ");
}
System.out.println();
//����
//wrap�������ֽ�����ת��Ϊһ���ֽڻ�����
ByteBuffer deBuffer=ByteBuffer.wrap(bytes);
CharBuffer cbuffer=c.decode(deBuffer);
System.out.println("������ֵ��"+cbuffer.toString());
String password="���dz�����";
//��UTF-8����������-----�ѵ���windowsϵͳ���ַ����йأ���������������������������������������
Charset c2=Charset.forName("UTF-8");
//����
ByteBuffer buffer2 =c2.encode(password);
//�õ��ֽ�����
byte[] bytes2=buffer2.array();
//������
System.out.println("��utf-8������ֵ");
for(byte b3:bytes2){
System.out.print(b3+" ");
}
System.out.println();
//����---�ǵ�Ȼ����ͬ���ַ����������������--wrap���Խ��ֽ�����ת���ֽڻ���
ByteBuffer buffer3= ByteBuffer.wrap(bytes2);
CharBuffer charBuffer= c2.decode(buffer3);
System.out.println(charBuffer.toString());
} catch (FileNotFoundException e) {
System.out.println("δ�ҵ����ļ�");
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
}
}
}