iteye_8219的博客

原创 JFreeChart 调试错误

java.lang.NullPointerException: No JFreeChart object found on the stack with name chart错误说明栈出现异常，仔细查看源代码，忘了给chart添加标题（红色）。[code="java"]public JFreeChart getChart() { DefaultPieDataset datase...