我有一个字符串,想知道该字符串的最后一个字符是否为 #
例子:
String test="test my String #";
简单来说:
if (test.endsWith("#"))
String[] tests = {
"asdf#",
"#asdf",
"sdf#f",
"#",
"",
"asdf",
};
String fmt = "%6s%12s%12s%12s%n";
System.out.format(fmt, "String", "startsWith", "endsWith", "contains");
for (String test : tests) {
System.out.format(fmt, test,
test.startsWith("#"),
test.endsWith("#"),
test.contains("#")
);
}
这将打印:
String startsWith endsWith contains
asdf# false true true
#asdf true false true
sdf#f false false true
# true true true
false false false
asdf false false false
boolean startsWith(String prefix)
boolean contains(CharSequence s)
if(test.endsWith("#"))
if(test.charAt(test.length()-1) == '#')
==
而不是.equals
,并且b与'#'
进行比较,而不是使用"#"
。 - sepp2k