String class java code example

Example 1: java string methods

static String valueOf(int i) - returns the string representation of the int 
argument.

Example 2: string java

System.out.println("abc");
     String cde = "cde";
     System.out.println("abc" + cde);
     String c = "abc".substring(2,3);
     String d = cde.substring(1, 2);

Example 3: 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

Example 4: java class from string

import java.lang.reflect.*;

Param1Type param1;
Param2Type param2;
String className = "Class1";
Class cl = Class.forName(className);
Constructor con = cl.getConstructor(Param1Type.class, Param2Type.class);
Object xyz = con.newInstance(param1, param2);

Example 5: String... java

//Object... (here String...) means that you can give
//in parameter one or many objects of same type

func();

func("arg1", "arg2", "arg3");

String[] args = new String[]{"arg1", "arg2", "arg3"}
func(args);

void func(String... args);

Example 6: string java

String str = "abc";