text/java this.codePointAt(k) == ch </blockquote> is true. In either case, if no such character occurs in this string, then-1is returned. Java documentation forjava.lang.String.indexOf(int). Portions of this page are modifications based on work created and shared by theAndroid Open ...
indexCoder = mix(indexCoder, s2);byte[] buf = newArray(indexCoder);// prepend each argument in reverse order, since we prepending// from the end of the byte arrayindexCoder = prepend(indexCoder, buf, s2); indexCoder = prepend(indexCoder, buf, s1);// 返回新建的String对象returnnewStrin...
CONSTANT_String_info { u1 tag; u2 string_index; } 1.2 运行时常量池 方法区的一部分。Class文件的常量池(上面的1.1)中的内容将在类加载后进入方法区的运行时常量池中存放。 每个运行时常量池都是从Java虚拟机的方法区域(§2.5.4)中分配的。当Java虚拟机创建类或接口(§5.3)时,将构造类或接口的运行时常...
StringmyStr="Hello planet earth, you are a great planet.";System.out.println(myStr.indexOf("planet")); Try it Yourself » Definition and Usage TheindexOf()method returns the position of the first occurrence of specified character(s) in a string. ...
Returns the index within this string of the last occurrence of the specified character. For values of ch in the range from 0 to 0xFFFF (inclusive), the index (in Unicode code units) returned is the largest value k such that: <blockquote> text/java 复制 this.charAt(k) == ch </bl...
More Java Courses IndexOf(String substring) This method returns the index of the first character of the substring passed as parameter to it. If the specified substring is not present in the string, the returned index would be -1. IndexOf(String substring, int fromindex) ...
0 new java.lang.String [15] //在堆中分配一个String类对象的空间,并将该对象的地址堆入操作数栈。 3 dup //复制操作数栈顶数据,并压入操作数栈。该指令使得操作数栈中有两个String对象的引用值。 4 ldc <String"Hello world"> [17] //将常量池中的字符串常量"Hello world"指向的堆中拘留String对象...
publicfinalclassStringimplementsjava.io.Serializable,Comparable<String>,CharSequence{/** The value is used for character storage. */privatefinal char value[];/** * Returns a new string that is a substring of this string. The * substring begins with the character at the specified index and ...
1.String.indexOf()API TheString.indexOf()in Java returns the index location of a specified character or string. TheindexOf()method is an overloaded method and accepts two arguments: substringorch: the substring that needs to be located in the current string. ...
IndexOutOfBoundsException - If offset is negative, count is negative, or offset is greater than codePoints.length - count Since: 1.5 String @Deprecated(since="1.1") public String(byte[] ascii, int hibyte, int offset, int count) Deprecated. This method does not properly convert bytes int...