我正在處理一個Java項目，它包含圖像。但是，當我將 Java 項目導出為可運行的 Jar 文件或僅導出 Jar 文件時，屏幕上不會顯示任何圖像。它在IDE中使用（日食）工作正常。我已經嘗試了人們發布的所有方法。我也使我的res文件夾成為主文件夾。    newFrame.setTitle("Mustache Clicker");     jLabel1.setText(i + "");     URL mustache1 = mainscreen.class.getResource("/images/mustache.png");     ImageIcon mustache = new ImageIcon(mustache1);     URL mustache2 = mainscreen.class.getResource("/images/Mustache Mine.png");     ImageIcon miner = new ImageIcon(mustache2);     URL mustache3 = mainscreen.class.getResource("/images/Auto .png");     ImageIcon auto = new ImageIcon(mustache3);     URL mustache4 = mainscreen.class.getResource("/images/mustache (1).png");     ImageIcon rain = new ImageIcon(mustache4);     URL mustache5 = mainscreen.class.getResource("/images/city.png");     ImageIcon city = new ImageIcon(mustache5);     jButton2.setIcon(miner);     jButton1.setIcon(mustache);     jButton3.setIcon(auto);     jButton4.setIcon(rain);     jButton5.setIcon(city);