is string class how many methods are there code example

Example 1: string method example in java

public char charAt(int index)
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String x = "airplane";
System.out.println( x.charAt(2) ); // output is 'r'

Example 2: string method example in java

public boolean contains(“searchString”)

String x = “Java is programming language”;
System.out.println(x.contains(“Amit”)); // This will print false
System.out.println(x.contains(“Java”)); // This will print true