常用idea快捷键

public class EclipseKeys{
public static void main(String[] args) {
System.out.println();

Scanner scanner = new Scanner(System.in);

int[] arr = new int[] { 33, 44, 5, 2, 4, 53, 2 };

int max = 0;
int temp = 0;
String string = new String();
char c = string.charAt(0);

for (int i = 0; i < arr.length; i++) {

}

EclipseKeys e = new EclipseKeys();
e.method();
e.num = 10;

InputStream is = null;

HashMap map1 = null;
map1 = new HashMap();
map1.put(null, null);

System.out.println(map1);

}

int num = 10;

public void method() {

}
}