如何将字符串反转？

使用StringBuffer或者StringBuilder中的reverse()方法

public static void main(String[] args) {
StringBuffer stringBuffers = new StringBuffer(“abcdefg”);
stringBuffers.reverse();
System.out.println(stringBuffers);
StringBuilder stringBuilder = new StringBuilder(“hijklmn”);
stringBuilder.reverse();
System.out.println(stringBuilder);
}

代码输出

gfedcba
nmlkjih