Boa tarde pessoal, depois de horas de tentativa, resolvi perguntar para vocês.
Estou tentando vincular 2 subreport dentro de um relatorio e me dá o seguinte erro:
Classe do erro: java.lang.NullPointerException
net.sf.jasperreports.engine.fill.JRPrintBand addOffsetElements 101
net.sf.jasperreports.engine.fill.JRFillElementContainer addSubElements 623
net.sf.jasperreports.engine.fill.JRFillElementContainer fillElements 600
net.sf.jasperreports.engine.fill.JRFillBand fill 406
net.sf.jasperreports.engine.fill.JRFillBand fill 352
net.sf.jasperreports.engine.fill.JRVerticalFiller fillBandNoOverflow 435
net.sf.jasperreports.engine.fill.JRVerticalFiller fillColumnHeader 479
net.sf.jasperreports.engine.fill.JRVerticalFiller fillPageBreak 1920
net.sf.jasperreports.engine.fill.JRVerticalFiller fillColumnBreak 1945
net.sf.jasperreports.engine.fill.JRVerticalFiller fillColumnBand 2053
net.sf.jasperreports.engine.fill.JRVerticalFiller fillDetail 755
net.sf.jasperreports.engine.fill.JRVerticalFiller fillReportStart 265
net.sf.jasperreports.engine.fill.JRVerticalFiller fillReport 128
net.sf.jasperreports.engine.fill.JRBaseFiller fill 836
net.sf.jasperreports.engine.fill.JRBaseFiller fill 765
net.sf.jasperreports.engine.fill.JRFiller fillReport 84
Mas se tento usar somente um subreport aí o relatorio funciona.