java - 如果条件编译时出错-具体问题

Question

我试图检测变量f1和f2是否具有字母v或b，然后检查两个单词的长度是否相同。我不知道为什么，但是当我运行这段代码时，我的if条件存在三个错误

    Scanner ask = new Scanner(System.in);
    String f1 = (ask.nextLine()).toLowerCase();
    String f2 = (ask.nextLine()).toLowerCase();
    boolean yes  = false;
    
    if((f1.indexOf("v") > -1 || f1.indexOf("b")) and (f2.indexOf("v") > -1 || f2.indexOf("b")) and (f1.length() == f2.length() )){
        yes = true;
    }

编译时出错

Solution.java:12: error: ')' expected
        if((wrd.indexOf("v") > -1 || wrd.indexOf("b")) and (wrd2.indexOf("v") > -1 || wrd2.indexOf("b")) and (wrd.length() == wrd2.length() )){
                                                      ^
Solution.java:12: error: ';' expected
        if((wrd.indexOf("v") > -1 || wrd.indexOf("b")) and (wrd2.indexOf("v") > -1 || wrd2.indexOf("b")) and (wrd.length() == wrd2.length() )){
                                                                                                        ^
Solution.java:12: error: ';' expected
        if((wrd.indexOf("v") > -1 || wrd.indexOf("b")) and (wrd2.indexOf("v") > -1 || wrd2.indexOf("b")) and (wrd.length() == wrd2.length() )){
^
3 errors
Exit Status

1

Answer 1

Java中的逻辑“和”运算符是&&，而不是单词and:

if ((f1.indexOf("v") > -1 || f1.indexOf("b")) && 
    (f2.indexOf("v") > -1 || f2.indexOf("b")) &&
    (f1.length() == f2.length())) {