1. String类的其他功能:
(1)替换功能:
String replace(char old, char new)
String replace(String old,String new)
(2)去除字符串两端的空格
String trim()
(3)按照字典顺序比较两个字符串
int compareTo(String str)
int compareToIgnoreCase(String str)
2. 案例演示:
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));//
System.out.println(s6.compareTo(s8));//
System.out.println(s6.compareTo(s9));// -16
}
}
运行效果如下: