Java.util.Scanner.nextBigDecimal() 方法 Java.util.Scanner.nextBigInteger() 方法 Java.util.Scanner.nextBigDecimal() 方法 package com.codingdict; import java.util.*; public class ScannerDemo { public static void main(String[] args) { String s = "Hello World! 3 + 3.0 = 6 true"; // create a new scanner with the specified String Object Scanner scanner = new Scanner(s); // find the next BigDecimal token and print it // loop for the whole scanner while (scanner.hasNext()) { // if the next is BigDecimal, print found and the decimal if (scanner.hasNextBigDecimal()) { System.out.println("Found :" + scanner.nextBigDecimal()); } // if a BigDecimal is not found, print "Not Found" and the token System.out.println("Not Found :" + scanner.next()); } // close the scanner scanner.close(); } } Java.util.Scanner.nextBigInteger() 方法