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How can a Java program use files inside the .jar for read and write?
如何从 JAR 写入 .txt 文件java编译项目？
当我运行我的项目时，它没有给出错误，但它只是不写入 JAR 文件中的 .txt。
我使用以下方法制作 JAR 文件:
netbeans clean /build tool
代码:
public class FileIO {
private File file;
private Scanner filescScanner, lineScanner;
private PrintWriter fileWriter;
private String[][] data;
public FileIO () {
data = new String[100][2];
}
public String[][] getLineScores(){
return this.loadHighscores(this.getClass().getResourceAsStream("LineHighscores.txt"));
}
public String[][] getTimeScores(){
return this.loadHighscores(this.getClass().getResourceAsStream("TimeHighscores.txt"));
}
public void setLineScores( String name,String lines ){
boolean found= false;
data = this.getLineScores();
for(int i = 0; i<data.length && !found ; i++){
if(data[i][0] == null || "Niemand".equals(data[i][0])){
data[i][0]=name;
data[i][1]=lines;
found=true;
}
}
this.saveHighscores(this.getClass().getResource("LineHighscores.txt"),data);
}
public void setTimeScores(String time, String name){
boolean found= false;
data = this.getLineScores();
for(int i = 0; i<data.length && !found ; i++){
if(data[i][0] == null || "Niemand".equals(data[i][0])){
data[i][0]=name;
data[i][1]=time;
found=true;
}
}
this.saveHighscores(this.getClass().getResource("TimeHighscores.txt"),data);
}
private String[][] loadHighscores( InputStream resourceStream){
int x=0;
String test = "";
try{
filescScanner = new Scanner(resourceStream);
}
catch(Exception ioe){
System.err.println(ioe);
}
if (filescScanner.hasNext()){
while(filescScanner.hasNextLine()&& x<100) {
lineScanner = new Scanner(filescScanner.nextLine());
lineScanner.useDelimiter("-/-");
data[x][0]=lineScanner.next();//name
data[x][1]=lineScanner.next();//data
x++;
}
lineScanner.close();
filescScanner.close();
}
else{
data[0][0] = "Niemand";
data[0][1] = "0";
}
return data;
}
private void saveHighscores( URL resourceStream, String[][] data){
int x=0;
try {
file = new File(resourceStream.toURI());
} catch (URISyntaxException ex) {
Logger.getLogger(FileIO.class.getName()).log(Level.SEVERE, null, ex);
}
try {
fileWriter = new PrintWriter(file);
} catch (FileNotFoundException ex) {
Logger.getLogger(FileIO.class.getName()).log(Level.SEVERE, null, ex);
}
if(data.length>x){
while(data.length>x && data[x][0] != null ){
fileWriter.println(data[x][0]+"-/-"+data[x][1]);
x++;
}
fileWriter.close();
}
}
public static void main(String[] args){
FileIO file = new FileIO();
file.setLineScores("55555555", "KoenKevin");
}
}