/**
* 目标：掌控String常用的其他API
*/
public class StringAPIOtherDemo5 {
public static void main(String[] args) {
//1.public int length(); 获取字符串的长度
String name = "我爱你中国love";
System.out.println("字符个数：" + name.length());
//2.public char charAt(int index); 获取某个索引位置处的字符
char ch = name.charAt(1);
System.out.println(ch);
System.out.println("----------遍历字符串中每个字符-------------");
for (int i = 0; i < name.length(); i++) {
char c = name.charAt(i);
System.out.println(c);
}
//3.public char[] toCharArray(); 把字符串转换成字符数组
System.out.println("--------把字符串转换成字符数组-------");
char[] chars = name.toCharArray();
for (int i = 0; i < chars.length; i++) {
System.out.println(chars[i]);
}
//4.public String substring(int beginIndex,int endIndex); 截取内容，（包前不包后）
System.out.println("--------截取内容，（包前不包后）-------");
String s1 = "java是最牛的编程语言之一~~";
String rs = s1.substring(8,12);
System.out.println(rs);
//5.public String substring(int beginIndex); 从当前索引一直截取到末尾
System.out.println("-------从当前索引一直截取到末尾------");
String rs2 = s1.substring(5);
System.out.println(rs2);
//6.public String replace(CharSequence target, CharSequence replacement); 将一种字符串用另一种字符串代替
System.out.println("------6-------");
String s2 = "三胖哥是00后，三胖哥的发型yyds，跟三胖哥一样";
String r3 = s2.replace("三胖歌","***");
System.out.println(r3);
//7.public boolean contains(CharSequence s); 查看有没有该字符串
System.out.println("------7-------");
System.out.println(s2.contains("三胖哥"));
System.out.println(s2.contains("三胖哥的"));
//8.public boolean startsWith(string prefix); 以什么开始
System.out.println("------8-------");
System.out.println(s2.startsWith("三胖哥"));
System.out.println(s2.startsWith("三胖"));
System.out.println(s2.startsWith("二胖2"));
//9.public String[] split(String s); 按照某个容器把字符串分刮成字符串数组返回
System.out.println("------9-------");
String data = "网，有，会话";
String[] names = data.split("，");
for (int i = 0; i < names.length; i++) {
System.out.println("选择了：" + names[i]);
}
}
}
