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int a = 100;
System.out.println (Integer.toBinaryString (a));
String format = df.format(Integer.valueOf(bin));
改为String format = df.format(Long.valueOf(bin));
public class Test {
public static void main(String[] args) {
int a = 100;
System.out.println(Integer.toBinaryString(a));
System.out.println(convert(Integer.toBinaryString(a), 8));
}
private static String convert(String str, int length) {
if (str.length() < length) {
String temp = "";
for (int i = 0; i < length - str.length(); i++) {
temp += "0";
}
return temp + str;
}
return str;
}
}
public static void main(String[] args) {
int a = 100;
String bin = Integer.toBinaryString(a);
System.out.println (Integer.toBinaryString (a));
DecimalFormat df = new DecimalFormat("00000000");
String format = df.format(Integer.valueOf(bin));
System.out.println(format);
}