时间显示

System.out.println(getTimeStr(1));

System.out.println(getTimeStr(10));

System.out.println(getTimeStr(100));

System.out.println(getTimeStr(1000));

System.out.println(getTimeStr(10000));

输出结果

00:00:01

00:00:10

00:01:40

00:16:40

02:46:40

 

下面代码不解释了

 

public static String getTimeStr(int time){

StringBuffer str=new StringBuffer();

int hour=time/3600;

if (hour>9) {

str.append(hour);

}else{

str.append("0");

str.append(hour);

}

str.append(":");

int minute=(time%3600)/60;

if (minute>9) {

str.append(minute);

}else{

str.append("0");

str.append(minute);

}

str.append(":");

int second=time%60;

if (second>9) {

str.append(second);

}else{

str.append("0");

str.append(second);

}

 

return str.toString();

}