Java I/O³£ÓÃÁ÷ʾÀý
package io;
import java.io.*;
/**
* @author ¸ßÕíÎâÓÇ
* ÀûÓûº³åÇøÔÀí,BufferedInputStream,
* ʵÏÖµÄÎļþ×Ö½ÚÁ÷¶ÁÈ¡¹¦ÄÜʾ·¶
*
*/
public class BufferedInOutputStream {
public BufferedInOutputStream() {
ioTest2();
}
public void ioTest2() {
FileInputStream in = null ;
BufferedInputStream bi = null;
int i= 0;
int count=0;
try{
in = new FileInputStream("D:/j/o/java2.txt");
bi = new BufferedInputStream(in);
while(( i=bi.read())!=-1) {
System.out.print((char)i);
count++;
}
System.out.println(count);
in.close();
bi.close();
}catch (IOException e){
e.printStackTrace();
}
}
public static void main(String[] args) {
new BufferedInOutputStream();
}
}
----------------------------------
package io;
import java.io.*;
/**
* @author Owner ÀûÓûº³åÇøÔÀí,BufferedInputStream,
* ʵÏÖµÄÎļþ×Ö·ûÁ÷¶ÁÈ¡ºÍдÈ빦ÄÜʾ·¶
*/
public class BufferedReaderWriter {
public BufferedReaderWriter() {
bufferRdWter();
}
public void bufferRdWter() {
FileReader fr = null;
FileWriter wt = null;
BufferedReader br = null;
BufferedWriter bw = null;
String s = "";
try {
fr = new FileReader("D:/j/o/java.txt");
br = new BufferedReader(fr);
wt = new FileWriter("D:/j/o/javat2.txt");
bw = new BufferedWriter(wt);
while ((s = br.readLine()) != null) {
bw.write(s);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
bw.flush();
wt.close();
bw.close();
br.close();
fr.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
new BufferedReaderWriter();
}
}
--------------------------------
package io;
import java.io.*;
/**
* @author ¸ßÕíÎâÓÇ
* Êý¾ÝÁ÷,×¢ÒâµÄÊÇÏȽøÏȳö.Êý¾ÝÁ÷·½±ãÎÒÃÇÓÃIOÊä³ö»ù±¾Êý¾ÝÀàÐ͵ÄÖµ.±ÈÈçËüÌṩµÄreadDouble();
*
*/
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1. rocksaw-1.0.0-src.tar.gz
2. vserv-tcpip-0.9.2-src.tar.gz
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1. build vserv-tcpip-0.9.2-src
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package Demo;
// Java·ºÐÍ·½·¨
class Demo26 {
public <T> T fun(T t) { // ¿ÉÒÔ½ÓÊÕÈÎÒâÀàÐ͵ÄÊý¾Ý
return t; // Ö±½Ó°Ñ²ÎÊý·µ»Ø
}
}
public class GenericsDemo26 {
public static void main(String args[]) {
Demo26 d = new Demo26(); // ʵÀý»¯Demo¶ÔÏó
String str = d.fun("it"); // ´«µÝ× ......
package Demo;
// Java·ºÐ͵ÄǶÌ×ÉèÖÃ
class Info31<T, V> { // ½ÓÊÕÁ½¸ö·ºÐÍÀàÐÍ
private T key;
private V value;
public Info31(T key, V value) {
this.setKey(key);
this.setValue(value);
}
public void setKey(T key) {
this.key = key;
}
public void setValue(V value) {
this. ......
JavaÊý¾ÝÀàÐÍ
HibernateÊý¾ÝÀàÐÍ
±ê×¼SQLÊý¾ÝÀàÐÍ
byte
byte
TINYINT
short
short
SMALLINT
int
integer
INGEGER
long
long
BIGINT
float
float
FLOAT
double
double
DOUBLE
java.math.BigDecimal
big_decimal
NUMERIC
char, java.lang.Character
character
CHAR(1)
boolean, java.lang.Boole ......