Java substring() Method Guide: Extracting Substrings

1 year ago
Olivia Parker
1 minute

In Java, the method used for string extraction is substring(). This method has two different forms of overloading.

  1. Extract a substring starting from the specified index position and return the substring from beginIndex to the end of the string.
  2. Return the substring of the string starting at the specified index and ending at endIndex-1.

The example code is as follows:

String str = "Hello World";
String sub1 = str.substring(6); // 从索引6开始截取字符串，返回"World"
String sub2 = str.substring(0, 5); // 从索引0到索引4截取字符串，返回"Hello"

Note: The substring() method returns a new string and does not modify the original string.

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