public void print(){

			for(int k=1;k<=cols;k++){
				System.out.print(vnames[k]+"\t");
			}
			System.out.print("\n");
			for(int k=1;k<=cols;k++){
				System.out.print(vunits[k]+"\t");
			}
			System.out.print("\n");
			for(int i=0;i<rows;i++){
				for(int j=0;j<cols;j++){
					System.out.print(vls[i][j]+"\t");
				}
				System.out.print("\n");
			}
		}