java实战 字符串处理

🧙 Questions

☄️Ideas

public void demo() {

    String fileName = "hello.ppt";
    int maxLength = 200;

    String prefixName = fileName.substring(0, fileName.lastIndexOf("."));
    String suffixName = fileName.substring(fileName.lastIndexOf("."));

    if (maxLength < suffixName.length()) {
        log.info("文件名称" + suffixName.substring(0, maxLength));
    }
    log.info("文件名称" + prefixName.substring(0, maxLength - suffixName.length()) + suffixName);
}

🔗 Links

• java website