String[][] stuMessage = new String[10][10];//你自己填充吧
        StringBuffer[][] student = new StringBuffer[10][10];
        for(int i=0;i <=stuMessage.length;i++) 
          for(int j=0;j <=8;j++) 
            { 
             String temp=stuMessage[i][j]; 
             student[i][j]=new StringBuffer(temp); 
             } 

        }