java.lang.IllegalStateException：您可以在org.apache.poi.hssf.usermodel问题上的.xls工作簿中定义多达4000种样式

Question

java.lang.IllegalStateException: The maximum number of cell styles was exceeded. You can define up to 4000 styles in a .xls workbook at org.apache.poi.hssf.usermodel.HSSFWorkbook.createCellStyle(HSSFWorkbook.java:1144) 2017-05-25 14:31:19 INFO Main:68 - PrepareEmailMsg at org.apache.poi.hssf.usermodel.HSSFWorkbook.createCellStyle(HSSFWorkbook.java:88) at org.apache.poi.ss.util.CellUtil.setCellStyleProperty(CellUtil.java:204) at org.apache.poi.ss.util.CellUtil.setFont(CellUtil.java:168). How to resolve this issue. CreateCellSty is avoided in this code.?

for(int i=0; i<sheet.getLastRowNum();i++)           
{               
    if(sheet.getRow(i)!=null)
    {                   
        System.out.println("removed"); 
        sheet.removeRow(sheet.getRow(i)); 

    }
    else{ 
        sheet.shiftRows(2, rows, 3);    
        System.out.println("shift");        
    }           
} 

Is this code is valid to remove data from A row of a sheet,Because after Completing of sheet this show above issue.? Please provide Proper Suggestion.

Answer 1

Your problem should be coming from this code

    else{ 
        sheet.shiftRows(2, rows, 3);    
        System.out.println("shift");        
    }     

Have you tried without it ?