String类的其它功能
- package cn.itcast_06;
- /*
- * String类的其他功能:
- *
- * 替换功能:
- * String replace(char old,char new)
- * String replace(String old,String new)
- *
- * 去除字符串两端空格
- * String trim()
- *
- * 按字典顺序比较两个字符串
- * int compareTo(String str)
- * int compareToIgnoreCase(String str)
- */
- public class StringDemo {
- public static void main(String[] args) {
- // 替换功能
- String s1 = "helloworld";
- String s2 = s1.replace('l', 'k');
- String s3 = s1.replace("owo", "ak47");
- System.out.println("s1:" + s1);
- System.out.println("s2:" + s2);
- System.out.println("s3:" + s3);
- System.out.println("---------------");
- // 去除字符串两空格
- String s4 = " hello world ";
- String s5 = s4.trim();
- System.out.println("s4:" + s4 + "---");
- System.out.println("s5:" + s5 + "---");
- // 按字典顺序比较两个字符串
- String s6 = "hello";
- String s7 = "hello";
- String s8 = "abc";
- String s9 = "xyz";
- System.out.println(s6.compareTo(s7));// 0
- System.out.println(s6.compareTo(s8));// 7
- System.out.println(s6.compareTo(s9));// -16
- }
- }
复制代码
|
|