■コード
package hello.java.lang;
public class HelloString {
public static void main(String[] args) {
String s = "abc";
System.out.println("s=" + s);
System.out.println("s.charAt(2)=" + s.charAt(2));
System.out.println("s.indexOf('b')=" + s.indexOf('b'));
System.out.println("s.length()=" + s.length());
System.out.println("s.contains(\"c\")=" + s.contains("c"));
}
}
■実行結果
s=abc
s.charAt(2)=c
s.indexOf('b')=1
s.length()=3
s.contains("c")=true