使用compareTo()方法的返回值:compareTo()方法返回一个整数值,可以直接使用这个值来比较字符串的大小。 String str1 = "Hello"; String str2 = "World"; if (str1.compareTo(str2) < 0) { System.out.println("str1 is less than str2"); } else if (str1.compareTo(str2) > 0) { System.ou...
Stringstr1=null;Stringstr2="banana";if(str1==null&&str2==null){System.out.println("str1 is equal to str2");}elseif(str1==null){System.out.println("str1 is less than str2");}elseif(str2==null){System.out.println("str1 is greater than str2");}else{intresult=str1.compareTo...
这里,stringValue是要转换的字符串,intValue是转换后的整型变量。以下是一个示例: Stringa="10";Stringb="2";intintA=Integer.parseInt(a);intintB=Integer.parseInt(b);if(intA>intB){System.out.println(a+" is greater than "+b);}elseif(intA<intB){System.out.println(a+" is less than "+b)...
//4、判断ASCII码值 public static boolean isNumeric0(String str){ for(int i=str.length();--i>=0;){ int chr=str.charAt(i); if(chr<48 || chr>57) return false; } return true; } //5、逐个判断str中的字符是否是0-9 public static boolean isNumeric3(String str){ final String number...
* argument is less than {@code0}. */publicStringBuffer(intcapacity){super(capacity);//自定义创建大小为capacity的char型数组}//省略其他代码……… StringBuilder类的构造函数与StringBuffer类的构造函数实现方式相同,此处就不贴代码了。 下面来看看StringBuilder类的append方法和insert方法的代码,因StringBuilder...
内部调用的其实就是int parseInt(String s, int radix)方法。 再来看Integer.parseInt()方法: 代码语言:javascript 复制 publicstaticintparseInt(String s)throws NumberFormatException{returnparseInt(s,10);} 内部调用的也是int parseInt(String s, int radix)方法,基数 radix 参数都是 10——同学们是不是猜到了...
以下是一个示例代码,演示了如何比较两个字符串的大小:```javapublic class CompareStrings { public static void main(String[] args) { String str1 = "abc"; String str2 = "abd"; int result = str1.compareTo(str2); if (result < 0) { System.out.println("str1 is less than str2"); }...
IndexOutOfBoundsException - If offset is negative, count is negative, or offset is greater than ascii.length - count See Also: String(byte[], int), String(byte[], int, int, java.lang.String), String(byte[], int, int, java.nio.charset.Charset), String(byte[], int, int), String(...
* argument is less than {@code 0}. */ public StringBuilder(int capacity) { super(capacity); } /** * Constructs a string builder initialized to the contents of the * specified string. The initial capacity of the string builder is
* this string; a value less than {@code 0} if this string * is lexicographically less than the string argument; and a * value greater than {@code 0} if this string is * lexicographically greater than the string argument. */publicintcompareTo(StringanotherString){intlen1=value.length;int...