使用split()方法分割字符串

// Use split() to extract substrings from a string.
class SplitDemo {
static void showSplit(String[] strs) {
for(String str : strs)
System.out.print(str + "|");
System.out.println("\n");
}
// Demonstrate split().
public static void main(String args[]) {
String result[];
// Split at spaces.

String testStr = "This is a test.";
System.out.println("Original string: " + testStr);
result = testStr.split("\\s+");
System.out.print("Split at spaces: ");
showSplit(result);
// Split on word boundaries.
testStr = "One, Two, and Three.";
System.out.println("Original string: " + testStr);
result = testStr.split("\\W+");
System.out.print("Split at word boundaries: ");
showSplit(result);

// Split same string on commas and zero or more spaces.
System.out.println("Original string: " + testStr);
result = testStr.split(",\\s*");
System.out.print("Split at commas: ");
showSplit(result);
// Split on word boundaries, but allow embedded
// periods and @.
testStr = "Jerry [e-mail]";
System.out.println("Original string: " + testStr);
result = testStr.split("[\\W && [^.@]]+");
System.out.print("Allow . and @ to be part of a word: ");
showSplit(result);
// Split on various punctuation and zero or more trailing spaces.
testStr = "This, is. a!:; test?";
System.out.println("Original string: " + testStr);
result = testStr.split("[.,!?:;]+\\s*");
System.out.print("Split on various punctuation: ");
showSplit(result);
}
}

输出：

Original string: This is a test.
Split at spaces: This|is|a|test.|
Original string: One, Two, and Three.
Split at word boundaries: One|Two|and|Three|
Original string: One, Two, and Three.
Split at commas: One|Two|and Three.|
Original string: Jerry [e-mail]
Allow . and @ to be part of a word: Jerry|[e-mail]|
Original string: This, is. a!:; test?
Split on various punctuation: This|is|a|test|