R.id cannot be resolved

R.id cannot be resolved cannot be resolved什么意识 java错误i cannot be resolved ActionListenter cannot be resolved to a type javax.servlet.jsp.JspException cannot be resolved to a type JAVA中报错i cannot be resolved to a variable The type javax.servlet.ServletContext cannot be resolved.It be resolved to是什么意思及反义词 英语翻译Cannot touch,Cannot hold,Cannot be together Cannot love, The remote name could not be resolved: 'platform.怎么解决? 英语翻译RESOLVED,that theBank be and hereby is authorized,withou Love cannot be compelled