package com.www.io;
import java.io.File;
import java.io.IOException;
public class Code {
public static void main(String[] args) throws Exception {
File f = new File("d:/io");
if(f.createNewFile()){
System.out.println("创建成功");
}else{
System.out.println("创建失败");
}
// if(f.exists()){
// System.out.println("文件存在");
// }else{
// System.out.println("文件不存在");
// }
String[] list = f.list();
for (String string : list) {
System.out.println(string);
}
// if(f.delete()){
// System.out.println("删除成功");
// }else{
// System.out.println("删除失败");
// }
System.out.println(f.getPath());
}
}
package com.www.io;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
public class Code01 {
public static void main(String[] args) throws Exception {
InputStream in = new FileInputStream("d:/io/aa.txt");
int read = in.read();
while (read != -1) {
System.out.print((char)read);
read = in.read();
}
in.close();
}
}
package com.www.io;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;
public class Code02 {
public static void main(String[] args) throws Exception {
OutputStream os = new FileOutputStream("d:/io/bb.txt");
byte[] b = new byte[]{99,97,100};
os.write(b);
os.close();
}
}
package com.www.io;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
public class Code03 {
public static void main(String[] args) throws Exception {
InputStream is = new FileInputStream("d:/123.JPG");
OutputStream os = new FileOutputStream("d:/io/456.JPG");
byte[] b = new byte[1024];
int read = is.read(b);
while(read!=-1){
os.write(b);
read = is.read(b);
}
os.close();
is.close();
}
}
“你是为自己而活 怎么会因为别人的几句流言蜚语就改变 难道别人说你长的丑你就不要这张脸了吗 那你也太没性格了”