What functionality in iReport allows for tool tip text?
I have a field name description that contains very large text. Instead of displaying large text I want to show two or three lines and rest of text as a tool tip. How is this possible?
You can use hyperlinkTooltipExpression expression for textField element, for example.
You can find sample here.
In iReport you can call dialog for setting tooltip with help of context menu Hyperlink.
来源：https://stackoverflow.com/questions/2431346/tool-tip-for-text-in-ireport