float f1[][] = new float[4][4];
float f2[][] = new float[4][];
float []f3[] = new float[4][4];
float []f4[] = new float[4][];
float [][]f5 = new float[4][4];
float [][]f6 = new float[4][];
口诀:左(等号左边)三右(等号右边)二
float f1[][] = new float[4][4];
float f2[][] = new float[4][];
float []f3[] = new float[4][4];
float []f4[] = new float[4][];
float [][]f5 = new float[4][4];
float [][]f6 = new float[4][];
口诀:左(等号左边)三右(等号右边)二