如何判断一个字符串是否在list集合中存在！
用contains方法，返回true和false
public
class
ListTest {
public
static
void
main(String[] args) {
List list =
new
ArrayList();
list.add(
"a"
);
list.add(
"b"
);
list.add(
"c"
);
boolean
bool = list.contains(
"a"
);
boolean
bool2 = list.contains(
"d"
);
System.out.println(bool);
System.out.println(bool2);
}
}
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