Java 示例 字符串比较性能 Java 示例 字符串范围匹配 Java 示例 字符串格式化 Java 示例 字符串比较性能 public class StringComparePerformance { public static void main(String[] args) { long startTime = System.currentTimeMillis(); for(int i = 0;i<50000;i++) { String s1 = "hello"; String s2 = "hello"; } long endTime = System.currentTimeMillis(); System.out.println("Time taken for creation" + " of String literals : "+ (endTime - startTime) + " milli seconds" ); long startTime1 = System.currentTimeMillis(); for(int i = 0;i<50000;i++) { String s3 = new String("hello"); String s4 = new String("hello"); } long endTime1 = System.currentTimeMillis(); System.out.println("Time taken for creation" + " of String objects : " + (endTime1 - startTime1) + " milli seconds"); } } Java 示例 字符串范围匹配 Java 示例 字符串格式化