Java String.replace() – Java String.replace()

The method replace() replaces all occurrences of a String in another String or all occurrences of a char with another char.

方法replace()将一个字符串在另一个字符串中出现的全部内容替换为另一个字符。

Available Signatures

可用的签名

public String replace(char oldChar, char newChar)
public String replace(CharSequence target, CharSequence replacement)

Example

示例

@Test
void whenReplaceOldCharNewChar_thenCorrect() {
    String s = "wslcoms to basldung";

    assertEquals("welcome to baeldung", s.replace('s', 'e'));
}

@Test
void whenReplaceTargetReplacement_thenCorrect() {
    String s = "welcome at baeldung, login at your course";

    assertEquals("welcome to baeldung, login to your course", s.replace("at", "to"));
}