?? excperf.java
字號:
class ExcPerf
{
public void method1(int size)
{
int[] ia = new int[size];
try {
for (int i=0; i<size; i++)
ia[i] = i;
//...
}
catch (Exception e){}
}
public void method2(int size)
{
int[] ia = new int[size];
for (int i=0; i<size; i++)
{
try {
ia[i] = i;
//...
}
catch (Exception e){}
}
}
public static void main(String args[])
{
int size = Integer.parseInt(args[0]);
ExcPerf ep = new ExcPerf();
long start = System.currentTimeMillis();
ep.method1(size);
long end = System.currentTimeMillis();
System.out.println("normal processing took an average of " +
(end-start) + " milliseconds");
start = System.currentTimeMillis();
ep.method2(size);
end = System.currentTimeMillis();
System.out.println("try/catch block processing took an " +
"average of " + (end-start) + " milliseconds");
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -