Java:19:错误Java新特性

Question

public class math1 {

  public static void main(String[] args) { 
    double a = Double.parseDouble(args[0]);
    double b = Double.parseDouble(args[1]);

    double c = Math.sin(a);
    double d = Math.cos(b);
    double e = Math.pow(c, 2);
    double f = Math.pow(d, 2);
    double g = e+f;

    System.out.println("sin(" + a + ")^2 +" "sin(" + b + ")^2 =" + g);
  }
}

上面是我的代码，我一直收到这个错误：

javac math1.java
math1.java:19: error: ')' expected
System.out.print1n("sin(" + a + ")^2 +" "sin(" + b + ")^2 =" + g);
                                       ^
math1.java:19: error: not a statement
System.out.print1n("sin(" + a + ")^2 +" "sin(" + b + ")^2 =" + g);
                                                         ^
math1.java:19: error: ';' expected
System.out.print1n("sin(" + a + ")^2 +" "sin(" + b + ")^2 =" + g);
                                                            ^
3 errors

我是Java新手，我想知道我做错了什么，谢谢！

Answer 1

您在输出行中缺少一个"+“。

System.out.println("sin(" + a + ")^2 +"+"sin(" + b + ")^2 =" + g);

Answer 2

从代码中删除“+”：

System.out.println("sin(" + a + ")^2 sin(" + b + ")^2 =" + g);

Answer 3

System.out.println("sin(" + a + ")^2 +"+" "+"sin(" + b + ")^2 =" + g);