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法律研究如何用Java中的另一個單詞替換字串中出現的任何單詞？
String類的replaceAll()方法接受兩個字串，一個代表查詢字串的正則表示式，另一個代表替換字串。
並且，用給定的字串替換所有匹配的序列。因此，要在字串中用另一個單詞替換某個特定單詞-
獲取所需的字串。
透過傳遞表示要替換的單詞（在單詞邊界“\b”內）的正則表示式和替換字串作為引數，對所得字串呼叫replaceAll方法。
檢索結果並列印。
示例
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class ReplacingWords {
public static void main(String[] args) throws IOException {
Scanner sc = new Scanner(new File("D://sample.txt"));
String input;
StringBuffer sb = new StringBuffer();
while (sc.hasNextLine()) {
input = sc.nextLine();
sb.append("
"+input);
}
String contents = sb.toString();
System.out.println("Contents of the string: "+contents);
contents = contents.replaceAll("\bTutorials point\b", "TP");
System.out.println("Contents of the string after replacement: ");
System.out.println(contents);
}
}輸出
Contents of the string: Tutorials point originated from the idea that there exists a class of readers who respond better to on-line content and prefer to learn new skills at their own pace from the comforts of their drawing rooms. At Tutorials point we provide high quality learning-aids for free of cost. Tutorials point recently developed an app to help students from 6th to 12th. Contents of the string after replacement: TP originated from the idea that there exists a class of readers who respond better to on-line content and prefer to learn new skills at their own pace from the comforts of their drawing rooms. At TP we provide high quality learning-aids for free of cost. TP recently developed an app to help students from 6th to 12th.
更新於：2019年10月10日
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