/** * demo */ package demo; /** * @author Wu Zhenzhen * @version Jul 25, 2012 11:04:57 AM * */ public class SubstringDemo { /** * <p /> * Jul 25, 2012 11:04:57 AM * * @param args */ public static void main(String[] args) { // while (true) { String str = "fjdskfksljflksjfkldsjflksdjflksjfkldsjflkdsjfldsjklfsjdflkdsjfklsdjflklfj:3ljkljkljlkjlsjoeiwruoweru9032uro3wrjlskfjlsajlasjflsadfioewuo uwoir ewlrjewklqfjwlfjoewiruoqwreowifjadslfjlasdhflaskdfiowuaio2342dsf:9-090sf:fsfds"; long start = System.currentTimeMillis(); String stra[] = str.split(":"); String m1 = stra[0]; String m2 = stra[1]; String m3 = stra[2]; String m4 = stra[3]; System.out.println("m1 = " + m1); System.out.println("m2 = " + m2); System.out.println("m3 = " + m3); System.out.println("m4 = " + m4); long end = System.currentTimeMillis(); System.out.println("split use times : " + (end - start) + " ms"); start = System.currentTimeMillis(); int idx1 = str.indexOf(":"); int idx2 = str.indexOf(":", idx1 + 1); int idx3 = str.indexOf(":", idx2 + 1); m1 = str.substring(0, idx1); m2 = str.substring(idx1 + 1, idx2); m3 = str.substring(idx2 + 1, idx3); m4 = str.substring(idx3 + 1, str.length()); System.out.println("m1 = " + m1); System.out.println("m2 = " + m2); System.out.println("m3 = " + m3); System.out.println("m4 = " + m4); end = System.currentTimeMillis(); System.out .println("substring use times : " + (end - start) + " ms"); System.out .println("----------------------------------------------"); } } }
m1 = fjdskfksljflksjfkldsjflksdjflksjfkldsjflkdsjfldsjklfsjdflkdsjfklsdjflklfj m2 = 3ljkljkljlkjlsjoeiwruoweru9032uro3wrjlskfjlsajlasjflsadfioewuo uwoir ewlrjewklqfjwlfjoewiruoqwreowifjadslfjlasdhflaskdfiowuaio2342dsf m3 = 9-090sf m4 = fsfds split use times : 70 ms m1 = fjdskfksljflksjfkldsjflksdjflksjfkldsjflkdsjfldsjklfsjdflkdsjfklsdjflklfj m2 = 3ljkljkljlkjlsjoeiwruoweru9032uro3wrjlskfjlsajlasjflsadfioewuo uwoir ewlrjewklqfjwlfjoewiruoqwreowifjadslfjlasdhflaskdfiowuaio2342dsf m3 = 9-090sf m4 = fsfds substring use times : 0 ms ----------------------------------------------
m1 = fjdskfksljflksjfkldsjflksdjflksjfkldsjflkdsjfldsjklfsjdflkdsjfklsdjflklfj m2 = 3ljkljkljlkjlsjoeiwruoweru9032uro3wrjlskfjlsajlasjflsadfioewuo uwoir ewlrjewklqfjwlfjoewiruoqwreowifjadslfjlasdhflaskdfiowuaio2342dsf m3 = 9-090sf m4 = fsfds split use times : 5 ms m1 = fjdskfksljflksjfkldsjflksdjflksjfkldsjflkdsjfldsjklfsjdflkdsjfklsdjflklfj m2 = 3ljkljkljlkjlsjoeiwruoweru9032uro3wrjlskfjlsajlasjflsadfioewuo uwoir ewlrjewklqfjwlfjoewiruoqwreowifjadslfjlasdhflaskdfiowuaio2342dsf m3 = 9-090sf m4 = fsfds substring use times : 0 ms ----------------------------------------------
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