步骤一:定义方法 publicstaticStringremoveLeadingZeros(Stringnumber){// 在这里编写你的代码} 1. 2. 3. 我们首先需要定义一个方法,用于接收字符串参数并返回处理后的结果。我们将这个方法命名为removeLeadingZeros,并将字符串参数命名为number。 步骤二:使用正则表达式替换 publicstaticStringremoveLeadingZeros(Stringnum...
除了上述方法,你还可以自定义一个方法来去除字符串开头的0。 publicstaticStringremoveLeadingZeros(Stringstr){intindex=0;while(index<str.length()&&str.charAt(index)=='0'){index++;}returnstr.substring(index);}Stringstr="000123";Stringresult=removeLeadingZeros(str);System.out.println(result);// 输出...
public class Test { public final static AtomicReference<String> atomicStr = new AtomicReference<String>("abc"); public static void main(String[] args) throws InterruptedException { for (int i = 0; i < 10; i++) { final int num = i; new Thread() { public void run() { try { Thread...
NumberOfLeadingZeros NumberOfTrailingZeros ParseInt ParseUnsignedInt(解析無符號整數) RemainderUnsigned 反向 ReverseBytes 向左旋轉 RotateRight Signum 總和 ToBinaryString ToHexString ToOctalString(轉換為八進制字串) ToString ToUnsignedLong ToUnsignedString ...
isEmpty()); String s1 = map.remove("a"); System.out.println(s1);//返回被删除的键的value值 System.out.println(map); map.clear(); System.out.println(map); } } 4. Map遍历方式 键找值 键值对 Lambda表达式 Lambda表达式 代码实例: package com.bobo.demo.UseMap; import java.util.HashMap...
NumberOfLeadingZeros NumberOfTrailingZeros Parseint ParseUnsignedInt RestUnsigned Reverse ReverseBytes RotateLeft RotateRight Signum Sum ToBinaryString ToHexString ToOctalString ToString ToUnsignedLong ToUnsignedString ValueOf Operadores Implementaciones de interfaz explícitas InternalError InterruptException IOverride...
NumberOfLeadingZeros NumberOfTrailingZeros ParseInt ParseUnsignedInt RemainderUnsigned Reverse ReverseBytes RotateLeft RotateRight Signum 합계 ToBinaryString ToHexString ToOctalString ToString ToUnsignedLong ToUnsignedString Valueof 연산자 명시적 인터페이스 구현 InternalError InterruptedEx...
remove sample sampleSize shuffle similarity sortedIndex symmetricDifference tail take takeRight union without zip zipObject ➗ Math (数学相关) 详细信息 average gcd lcm findNextPositivePowerOfTwo isEven isPowerOfTwo generateRandomInt 📜 String (字符串相关) 详细信息 anagrams byteSize capitalize capit...
numberOfTrailingZeros(long i) Returns the number of zero bits following the lowest-order ("rightmost") one-bit in the two's complement binary representation of the specified long value. static long parseLong(String s) Parses the string argument as a signed decimal long. static long parseLon...
This value is converted to a string of ASCII digits in octal (base 8) with no extra leading 0s. The value of the argument can be recovered from the returned string s by calling Integer.parseUnsignedInt(s, 8). If the unsigned magnitude is zero, it is represented by a single zero ...