J250511/01-JavaSE阶段代码/J20250715/testString/TestString.java

package J20250715.testString;

/**
 * @author WanJl
 * @version 1.0
 * @title TestString
 * @description
 *  replace(char oldChar, char newChar) 将字符串中所有的oldChar都换成newChar
 * @create 2025/7/15
 */
public class TestString {
    public static void main(String[] args) {
        String s="hello world";
        String s1 = s.replace('l', 'z');
        System.out.println(s1);
    }
}