java的的io操作操作(将字符串写入到将字符串写入到txt文件中文件中)
主要介绍了java的io操作示例,将字符串写入到txt文件中,需要的朋友可以参考下
复制代码 代码如下:
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("//www.jb51.net");// 往文件里写入字符串
ps.append("//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 ");// 往已有的文件上添加字符串
bw.write("def\r ");
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");
rf.writeBytes("app");
rf.writeBytes("hijklllll");
rf.close();
} catch (IOException e) {
e.printStackTrace();
}