Question

String sAge = scan.nextLine();
Scanner scan = new Scanner( System.in );

System.out.print( "what year were you born? >");
int iAge = scan.nextInt (sAge);
final double Cyear = 2014;
final double LEmax = 77.9;

System.out.println( "\nThe percentage of your life you have lived is " + int LEmax );

当我编译它时，我得到这些错误：

C:\Users\PracticeMethods.java:54: error: '.class' expected
  System.out.println( "\nThe percentage of your life you have lived is " + int LEmax );
                                                                               ^
C:\Users\PracticeMethods.java:54: error: ';' expected
  System.out.println( "\nThe percentage of your life you have lived is " + int LEmax );

我做错了什么？你能帮我解决这些错误吗？

Answer 1

这只是一个语法错误。试试这个：

System.out.println( "\nThe percentage of your life you have lived is " + LEmax );

请注意，您不必须再次说LEmax是int，我们只在声明变量时指定变量的类型，而不是在我们使用时它。或许你打算做演员？如果是这样，那么你应该这样写，围绕()之间的类型：

System.out.println( "\nThe percentage of your life you have lived is " + (int) LEmax );

Answer 2

您错误地将LEmax转换为int。 System.out.println( "\nThe percentage of your life you have lived is " + int LEmax );附近的括号System.out.println( "\nThe percentage of your life you have lived is " + (int) LEmax ); int代替{{1}}。

编译器错误：＆＃39; .class＆＃39;预期

2 个答案: