java的io操作(将字符串写入到txt文件中)

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.RandomAccessFile;
public class WriteStringToTxt {
public void WriteStringToFile(String filePath) {
try {
File file = new File(filePath);
PrintStream ps = new PrintStream(new FileOutputStream(file));
ps.println("http://www.jb51.net");// 往文件里写入字符串
ps.append("http://www.jb51.net");// 在已有的基础上添加字符串
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} public void WriteStringToFile2(String filePath) {
try {
FileWriter fw = new FileWriter(filePath, true);
BufferedWriter bw = new BufferedWriter(fw);
bw.append("在已有的基础上添加字符串");
bw.write("abc\r\n ");// 往已有的文件上添加字符串
bw.write("def\r\n ");
bw.write("hijk ");
bw.close();
fw.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} public void WriteStringToFile3(String filePath) {
try {
PrintWriter pw = new PrintWriter(new FileWriter(filePath));
pw.println("abc ");
pw.println("def ");
pw.println("hef ");
pw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} public void WriteStringToFile4(String filePath) {
try {
RandomAccessFile rf = new RandomAccessFile(filePath, "rw");
rf.writeBytes("op\r\n");
rf.writeBytes("app\r\n");
rf.writeBytes("hijklllll");
rf.close();
} catch (IOException e) {
e.printStackTrace();
}
} public void WriteStringToFile5(String filePath) {
try {
FileOutputStream fos = new FileOutputStream(filePath);
String s = "http://www.jb51.netl";
fos.write(s.getBytes());
fos.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} public static void main(String[] args) {
String filePath = "E:\\link.txt";
// new WriteStringToTxt().WriteStringToFile(filePath);
// new WriteStringToTxt().WriteStringToFile2(filePath);
// new WriteStringToTxt().WriteStringToFile3(filePath);
// new WriteStringToTxt().WriteStringToFile4(filePath);
new WriteStringToTxt().WriteStringToFile5(filePath);
}
}

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