如何删除java中的特定字符("，")？

String str = "Java, Programming, Language";
str = str.replace(",", "");
System.out.println(str);  // 输出结果：Java Programming Language

String str = "Java, Programming, Language";
str = str.replaceAll(",", "");
System.out.println(str);  // 输出结果：Java Programming Language

String str = "Java, Programming, Language";
StringBuilder sb = new StringBuilder(str);
for (int i = 0; i < sb.length(); i++) {
    if (sb.charAt(i) == ',') {
        sb.deleteCharAt(i);
        i--;  // 删除字符后，需要将索引回退一位
    }
}
str = sb.toString();
System.out.println(str);  // 输出结果：Java Programming Language