Returns the index within this string of the first occurrence of the specified character. If a character with value ch occurs in the character sequence represented by this String object, then the index (in Unicode code units) of the first such occurrence is returned. For values of ch in the...
publicclassStringPerformanceTest{publicstaticvoidmain(String[]args){Stringstr="Hello, World!";longstartTime=System.currentTimeMillis();for(inti=0;i<10000;i++){str.substring(1,5);}longendTime=System.currentTimeMillis();System.out.println("Substring method time: "+(endTime-startTime)+" ms")...
Answer:Java has an inbuilt method called length() that is used to find the length of a String. This is the standard way to find the length. However, we can also find the length of a String using the lastIndexOf() method but it cannot be used while we are providing input through the...
Search a string for the first occurrence of "planet": 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)...
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. ...
You can see, the occurrence of the word “Java” is twice in the given string. However, the indexOf Java method returned the first occurrence which is at the 8thposition. What if the given substring does not exist? For this example, the Scanner class is used to take the user input. ...
text/java this.codePointAt(k) == ch </blockquote> is true. In either case, if no such character occurs in this string, then-1is returned. TheStringis searched backwards starting at the last character. Java documentation forjava.lang.String.lastIndexOf(int). Portions of...
text/java this.codePointAt(k) == ch </blockquote> is true. In either case, if no such character occurs in this string, then-1is returned. TheStringis searched backwards starting at the last character. Java documentation forjava.lang.String.lastIndexOf(int). Portions of...
Java documentation for java.lang.AbstractStringBuilder.indexOf(java.lang.String, int). Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License. Applies to .NET ...
Search a string for the last occurrence of "planet": StringmyStr="Hello planet earth, you are a great planet.";System.out.println(myStr.lastIndexOf("planet")); Try it Yourself » Definition and Usage ThelastIndexOf()method returns the position of the last occurrence of specified characte...