Replaces the specified subsequence in this builder with the specified string. C# 複製 [Android.Runtime.Register("replace", "(IILjava/lang/String;)Ljava/lang/StringBuilder;", "")] public Java.Lang.StringBuilder Replace(int start, int end, string str); Parameters start Int32 the inclusive ...
StringBuildersb=newStringBuilder(1024);// 设置初始容量为1024 链式调用 由于StringBuilder的方法都返回它自己的对象,所以可以使用链式调用的方式来更加简洁的实现复杂的字符串拼接操作 //链式调用publicstaticvoidtestMethodChaining(){StringBuildersb=newStringBuilder(); sb.append("hello").append("world").ins...
// 创建StringBuilder对象StringBuildersb=newStringBuilder("hello");// append添加System.out.println(sb.append(" java"));//hello java// delete(x,y)删除下标x到y位置上的字符System.out.println(sb.delete(0,1));//ello java// deleteCharAt删除指定下标的字符System.out.println(sb.deleteCharAt(0));//...
public StringBuilder append(boolean b) Appends the string representation of the boolean argument to the sequence. The overall effect is exactly as if the argument were converted to a string by the method String.valueOf(boolean), and the characters of that string were then appended to this char...
StringBuildersb=newStringBuilder(1024);// 设置初始容量为1024 链式调用 由于StringBuilder的方法都返回它自己的对象,所以可以使用链式调用的方式来更加简洁的实现复杂的字符串拼接操作 //链式调用publicstaticvoidtestMethodChaining(){StringBuildersb=newStringBuilder();sb.append("hello").append("world").inser...
replace(int start, int end, String str):使用给定 String 中的字符替换此序列的子字符串中的字符。 示例: importjava.util.Arrays;importjava.util.Scanner;importjava.math.*;publicclassMain {publicstaticvoidmain(String[] args) {//TODO Auto-generated method stubScanner cin =newScanner(System.in);//...
public static void method_update() { StringBuffer sb = new StringBuffer("abcdefg"); // 替换一部分 sop(sb.replace(1, 4, "java")); // 替换一个 sb.setCharAt(sb.length() - 1, 'k'); sop(sb.toString()); } 1. 2. 3. 4. ...
The principal operations on a StringBuilder are the append and insert methods, which are overloaded so as to accept data of any type. Each effectively converts a given datum to a string and then appends or inserts the characters of that string to the string builder. The append method always...
[Android.Runtime.Register("insert", "(ILjava/lang/CharSequence;)Ljava/lang/StringBuilder;", "")] public Java.Lang.StringBuilder Insert (int dstOffset, Java.Lang.ICharSequence? s); Parameters dstOffset Int32 s ICharSequence the CharSequence to insert. Returns StringBuilder Attributes Registe...
Because, this method takes String, StringBuffer and StringBuilder. Step 2: Check the target string is presnt in the current using indexOf() method. This indexOf method returns index of the target string if it finds. Index is stored in variable int j. Step 3: If returned index is ...