Java，包括Print行中的int变量

Question

如何在句子中间插入一个变量，其中（）是

System.out.println("Since there are (trying to insert  int bluerocks here) there must be less than 12 normal rocks  "+bluerocks);

Answer 1

你有一些选择。

使用字符串连接，就在您想要的位置（注意引号数）：

System.out.println("Since there are (" + bluerocks
                    + ") there must be less than 12 normal rocks");

...或使用符号替换，通过printf：

System.out.printf("Since there are (%d) there must be less than 12 normal rocks",
                  bluerocks);

Answer 2

您可以通过多种方式执行此操作，Java支持内联字符串连接，因此这是有效的：

System.out.println("Since there are " + bluerocks + " there must be less than 12 normal rocks  ");

或者，您可以使用format方法：

System.out.format("Since there are %d there must be less than 12 normal rocks  \n", bluerocks);

Answer 3

您可以使用String concatenation operator +和println()之类的

System.out.println("Since there are " + bluerocks 
    + " there must be less than 12 normal rocks");

或者printf(String, Object...)喜欢

System.out.printf("Since there are %d there must be "
    + "less than 12 normal rocks%n", bluerocks);

Answer 4

这里的很多人都给了你正确的答案

System.out.println("Since there are " + bluerocks + " there must be less than 12 normal rocks");

或

System.out.format("Since there are %d there must be less than 12 normal rocks  \n", bluerocks);

或

System.out.printf("Since there are %d there must be than 12 normal rocks%n", bluerocks);

但如果这似乎很复杂或困难，那么你总是可以在多个打印陈述中将其分解

System.out.print("Since there are ");
System.out.print(bluerocks);
System.out.print(" there must be less than 12 normal rocks\n");

一切都是关于学习，不需要在这里大惊小怪。