builder.java

来自「我初学java时两个星期写的源代码」· Java 代码 · 共 22 行

package com.softeem.jbs;

public class Builder {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		long l1 = System.currentTimeMillis();
		String s = " ";
		// StringBuilder sb = new StringBuilder();
		for (int i = 0; i < 10000; i++) {
			s += i;
			// sb.append(i);
		}
		long l2 = System.currentTimeMillis();
		System.out.println(l2 - l1);

	}

}