Java 如果用户输入一个特定的数字，我如何停止程序执行下一个语句？

此程序提示用户输入奇数整数，该整数将决定特定菱形图案的高度。我的程序执行其他语句，即使用户输入列出的另一个数字之一

if ((number% 2 == 0)|| number <=0 )System.out.println("--- The number you entered is not odd positive!! Please try again!");

 else
    {if (number == 9)

        for (int row = 1 ; row < 10 ; row += 2) {
                    for (int col = 0 ; col < 10 - 1 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println("");
                }

                for (int row = 7 ; row > 0 ; row -= 2) {
                    for (int col = 0 ; col < 9 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println(""); }
                        System.out.println("Here is the diamond shape, whose height is " + number);

     //-----------------------------------------------------------------------

       if (number==7)

                for (int row = 1 ; row < 8 ; row += 2) {
                    for (int col = 0 ; col < 8 - 1 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println("");
                }

                for (int row = 5 ; row > 0 ; row -= 2) {
                    for (int col = 0 ; col < 7 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println("");}
                        System.out.println("Here is the diamond shape, whose height is " + number);
     //---------------------------------------------------------------------------

       if (number == 5)     

               for (int row = 1 ; row < 6 ; row += 2) {
                    for (int col = 0 ; col < 6 - 1 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println("");
                }

                for (int row = 3 ; row > 0 ; row -= 2) {
                    for (int col = 0 ; col < 5 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println("");}
                        System.out.println("Here is the diamond shape, whose height is " + number);
     //--------------------------------------------------------------------------

      if (number == 3)

               for (int row = 1 ; row < 4 ; row += 2) {
                    for (int col = 0 ; col < 4 - 1 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println("");
                }

                for (int row = 1 ; row > 0 ; row -= 2) {
                    for (int col = 0 ; col < 3 - row / 2 ; col++)
                        System.out.print(" ");

                    for (int col = 0 ; col < row ; col++)
                        System.out.print("*");
                        System.out.println("");}
                        System.out.println("Here is the diamond shape, whose height is " + number);}

if（（数字%2==0）| |数字0；行-=2）{
for（int col=0；col<9-行/2；col++）
系统输出打印（“”）；
for（int col=0；col0；行-=2）{
对于（int col=0；col<7-行/2；col++）
系统输出打印（“”）；
for（int col=0；col0；行-=2）{
for（int col=0；col<5-行/2；col++）
系统输出打印（“”）；
for（int col=0；col0；行-=2）{
for（int col=0；col<3-行/2；col++）
系统输出打印（“”）；
for（int col=0；col

小心你的编码风格。在您的if条件之后没有使用{，因此只有下一个语句与if条件相关。我假设用户只能输入一个数字，因此您应该使用else if条件，而不是其他if条件

最好是发布整个方法，而不仅仅是其中的一部分。

您可以在每个选项的底部添加“break；”或“continue；”，具体取决于您是否要中断或继续执行这些选项

也考虑使用一个开关case语句（下面提供的代码是未经测试的，只是一个例子）。 我不知道这是否适合你的需要，但似乎你有一个简单的数字列表，可以选择-开关在这些情况下工作的伟大。 i、 e:

pickANumber=sc.nextInt（）

开关（pickANumber）{
案例3：
对于（int行=1；行<4；行+=2）{
for（int col=0；col<4-1-row/2；col++）
系统输出打印（“”）；
for（int col=0；col0；行-=2）{
for（int col=0；col<3-行/2；col++）
系统输出打印（“”）；
for（int col=0；col0；行-=2）{
for（int col=0；col<5-行/2；col++）
系统输出打印（“”）；
for（int col=0；col        switch (pickANumber) { 
           case 3: 
                for (int row = 1 ; row < 4 ; row += 2) {
                for (int col = 0 ; col < 4 - 1 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println("");
            }

                for (int row = 1 ; row > 0 ; row -= 2) {
                for (int col = 0 ; col < 3 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println("");}
                    System.out.println("Here is the diamond shape, whose height is " + number);}
              break;

           case 5: 
           for (int row = 1 ; row < 6 ; row += 2) {
                for (int col = 0 ; col < 6 - 1 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println("");
            }

            for (int row = 3 ; row > 0 ; row -= 2) {
                for (int col = 0 ; col < 5 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println("");}
                    System.out.println("Here is the diamond shape, whose height is " + number);
              break;

           case 7: 
           for (int row = 1 ; row < 8 ; row += 2) {
                for (int col = 0 ; col < 8 - 1 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println("");
            }

            for (int row = 5 ; row > 0 ; row -= 2) {
                for (int col = 0 ; col < 7 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println("");}
                    System.out.println("Here is the diamond shape, whose height is " + number);
              break;

           case 9:
           for (int row = 1 ; row < 10 ; row += 2) {
                for (int col = 0 ; col < 10 - 1 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println("");
            }

            for (int row = 7 ; row > 0 ; row -= 2) {
                for (int col = 0 ; col < 9 - row / 2 ; col++)
                    System.out.print(" ");

                for (int col = 0 ; col < row ; col++)
                    System.out.print("*");
                    System.out.println(""); }
                    System.out.println("Here is the diamond shape, whose height is " + number);
                break;

             default: System.out.println("Invalid option entered - please try again");