文件名称：java浏览器代码报错
文件大小：97KB
文件格式：ZIP
更新时间：2023-01-09 15:52:36
java
java运行中出现空指针异常Exception in thread "main" java.lang.NullPointerException
at BrowserViewer.makeButton(BrowserViewer.java:310)
at BrowserViewer.makeNavigationPanel(BrowserViewer.java:217)
at BrowserViewer.makeInputPanel(BrowserViewer.java:199)
at BrowserViewer.