将字符串输出到系统输出最快的方法是什么？

感谢您的建议。我创建了一个测试程序来比较它们：

import java.io.BufferedOutputStream;import java.io.BufferedWriter;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.lang.StringBuilder;public class systemouttest {    public static void main(String[] args) throws Exception {        long starttime = System.currentTimeMillis();        for (int i = 0; i < 100000; i++) {System.out.println( i );        }        long printlntime = System.currentTimeMillis();        StringBuilder sb = new StringBuilder();        for (int i = 0; i < 100000; i++) { sb.append( i + "n" );        }        System.out.print(sb.toString());        long stringbuildertime = System.currentTimeMillis();        OutputStream out = new BufferedOutputStream ( System.out );        for (int i = 0; i < 100000; i++) { out.write((i + "n").getBytes());        }        out.flush();        long bufferedoutputtime = System.currentTimeMillis();        BufferedWriter log = new BufferedWriter(new OutputStreamWriter(System.out));        for (int i = 0; i < 100000; i++) { log.write(i + "n");        }        log.flush();        long bufferedwritertime = System.currentTimeMillis();        System.out.println( "System.out.println: " + (printlntime - starttime) );        System.out.println( "StringBuilder: " + (stringbuildertime - printlntime) );        System.out.println( "BufferedoutputStream: " + (bufferedoutputtime - stringbuildertime) );        System.out.println( "BufferedWriter: " + (bufferedwritertime - bufferedoutputtime) );    }}

结果：

Environment1
System.out.println：482
StringBuilder：210
BufferedoutputStream：86
BufferedWriter：202

Environment2
System.out.println：1763
StringBuilder：45
BufferedoutputStream：76
BufferedWriter：34

这些建议的表现均优于System.out.println。BufferedOutputStream似乎是最安全的选择，因为它在两种测试环境中均表现良好。BufferedWriter也许更快。

如果有人有任何想法，请发表进一步的建议。我敢肯定有人可以使它更快：)