英文:
If condition Error on compiling - Specific question
问题
我正在尝试检测变量 f1 和 f2 是否含有字母 "v" 或 "b"，然后检查这两个单词是否具有相同的长度。我不知道为什么，但当我运行这段代码时，它显示我的 if 条件中有三个错误。
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")) && (f2.indexOf("v") > -1 || f2.indexOf("b")) && (f1.length() == f2.length())) {
yes = true;
}
编译错误：
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
英文:
I am trying to detect if the variables f1 and f2 have the letter v or b and then check if both words have the same length. I do not know why but when I run this code says that there are three errors on my if condition
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;
}
Error at compile
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
答案1
得分: 2
在Java中，逻辑"and"运算符表示为&&，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())) {
英文:
The logical "and" operator in Java is &&, not the word and:
if ((f1.indexOf("v") > -1 || f1.indexOf("b")) &&
(f2.indexOf("v") > -1 || f2.indexOf("b")) &&
(f1.length() == f2.length())) {
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