第一种类型布尔第二种类型char java错误

Question

if( (mychar == '+' || mychar == '-') && (stack.peek() ==  '+' || stack.peek() = '-') )

我收到以下错误：

bad operand types for binary operator '||'
first type:  boolean
second type: Character

我已多次检查过，但我无法弄明白。

Answer 1

你忘了在结尾添加双倍==。

应该是stack.peek() == '-'，而不是stack.peek() = '-'