Bold the text inside the variable expression in Jasper Reports
1- Create a variable
2- Set variable expression, in variable expression we will concatenate our text with text field with bold font tag.
3- Set variable field “Markup” property to “HTML”.
4- If you will not set the “Markup” property to “HTML”, than bold tag “<b></b>” shows as it is.
Finally your report looks like this with bold and center align.