docs: add java snippets to the examples in guides (#5638)

docs/src/assertions.md

@@ -8,14 +8,18 @@ text content of an element. These APIs can be used in your test assertions.
 
 <!-- TOC -->
 
-
 ## Text content
 
 ```js
 const content = await page.textContent('nav:first-child');
 expect(content).toBe('home');
 ```
 
+```java
+String content = page.textContent("nav:first-child");
+assertEquals("home", content);
+```
+
 ```python async
 content = await page.text_content("nav:first-child")
 assert content == "home"
@@ -37,6 +41,11 @@ const text = await page.innerText('.selected');
 expect(text).toBe('value');
 ```
 
+```java
+String text = page.innerText(".selected");
+assertEquals("value", text);
+```
+
 ```python async
 text = await page.inner_text(".selected")
 assert text == "value"
@@ -58,6 +67,11 @@ const alt = await page.getAttribute('input', 'alt');
 expect(alt).toBe('Text');
 ```
 
+```java
+String alt = page.getAttribute("input", "alt");
+assertEquals("Text", alt);
+```
+
 ```python async
 checked = await page.get_attribute("input", "alt")
 assert alt == "Text"
@@ -75,6 +89,11 @@ const checked = await page.isChecked('input');
 expect(checked).toBeTruthy();
 ```
 
+```java
+boolean checked = page.isChecked("input");
+assertTrue(checked);
+```
+
 ```python async
 checked = await page.is_checked("input")
 assert checked
@@ -96,6 +115,11 @@ const content = await page.$eval('nav:first-child', e => e.textContent);
 expect(content).toBe('home');
 ```
 
+```java
+Object content = page.evalOnSelector("nav:first-child", "e => e.textContent");
+assertEquals("home", content);
+```
+
 ```python async
 content = await page.eval_on_selector("nav:first-child", "e => e.textContent")
 assert content == "home"
@@ -117,6 +141,11 @@ const html = await page.innerHTML('div.result');
 expect(html).toBe('<p>Result</p>');
 ```
 
+```java
+String html = page.innerHTML("div.result");
+assertEquals("<p>Result</p>", html);
+```
+
 ```python async
 html = await page.inner_html("div.result")
 assert html == "<p>Result</p>"
@@ -138,6 +167,11 @@ const visible = await page.isVisible('input');
 expect(visible).toBeTruthy();
 ```
 
+```java
+boolean visible = page.isVisible("input");
+assertTrue(visible);
+```
+
 ```python async
 visible = await page.is_visible("input")
 assert visible
@@ -156,7 +190,12 @@ assert visible
 
 ```js
 const enabled = await page.isEnabled('input');
-expect(visible).toBeTruthy();
+expect(enabled).toBeTruthy();
+```
+
+```java
+boolean enabled = page.isEnabled("input");
+assertTrue(enabled);
 ```
 
 ```python async
@@ -198,6 +237,25 @@ const length = await page.$$eval('li.selected', (items) => items.length);
 expect(length === 3).toBeTruthy();
 ```
 
+```java
+// Assert local storage value
+Object userId = page.evaluate("() => window.localStorage.getItem('userId')");
+assertNotNull(userId);
+
+// Assert value for input element
+page.waitForSelector("#search");
+Object value = page.evalOnSelector("#search", "el => el.value");
+assertEquals("query", value);
+
+// Assert computed style
+Object fontSize = page.evalOnSelector("div", "el => window.getComputedStyle(el).fontSize");
+assertEquals("16px", fontSize);
+
+// Assert list length
+Object length = page.evalOnSelectorAll("li.selected",  "items => items.length");
+assertEquals(3, length);
+```
+
 ```python async
 # Assert local storage value
 user_id = page.evaluate("() => window.localStorage.getItem('user_id')")
@@ -245,4 +303,4 @@ assert length == 3
 - [`method: Frame.evalOnSelectorAll`]
 - [`method: ElementHandle.evalOnSelector`]
 - [`method: ElementHandle.evalOnSelectorAll`]
-- [EvaluationArgument]
+- [EvaluationArgument]

docs/src/auth.md

@@ -36,6 +36,17 @@ await page.click('text=Submit');
 // Verify app is logged in
 ```
 
+```java
+Page page = context.newPage();
+page.navigate("https://github.com/login");
+// Interact with login form
+page.click("text=Login");
+page.fill("input[name='login']", USERNAME);
+page.fill("input[name='password']", PASSWORD);
+page.click("text=Submit");
+// Verify app is logged in
+```
+
 ```python async
 page = await context.new_page()
 await page.goto('https://github.com/login')
@@ -88,6 +99,16 @@ const storageState = JSON.parse(process.env.STORAGE);
 const context = await browser.newContext({ storageState });
 ```
 
+```java
+// Save storage state and store as an env variable
+String storage = context.storageState();
+System.getenv().put("STORAGE", storage);
+
+// Create a new context with the saved storage state
+BrowserContext context = browser.newContext(
+  new Browser.NewContextOptions().withStorageState(storage));
+```
+
 ```python async
 import json
 import os
@@ -150,6 +171,23 @@ await context.addInitScript(storage => {
 }, sessionStorage);
 ```
 
+```java
+// Get session storage and store as env variable
+String sessionStorage = (String) page.evaluate("() => JSON.stringify(sessionStorage");
+System.getenv().put("SESSION_STORAGE", sessionStorage);
+
+// Set session storage in a new context
+String sessionStorage = System.getenv("SESSION_STORAGE");
+context.addInitScript("(storage => {\n" +
+  "  if (window.location.hostname === 'example.com') {\n" +
+  "    const entries = JSON.parse(storage);\n" +
+  "    Object.keys(entries).forEach(key => {\n" +
+  "      window.sessionStorage.setItem(key, entries[key]);\n" +
+  "    });\n" +
+  "  }\n" +
+  "})(" + sessionStorage + ")");
+```
+
 ```python async
 import os
 # Get session storage and store as env variable
@@ -199,8 +237,6 @@ manual intervention. Persistent authentication can be used to partially automate
 MFA scenarios.
 
 ### Persistent authentication
-Web browsers use a directory on disk to store user history, cookies, IndexedDB
-and other local state. This disk location is called the [User data directory](https://chromium.googlesource.com/chromium/src/+/master/docs/user_data_dir.md).
 
 Note that persistent authentication is not suited for CI environments since it
 relies on a disk location. User data directories are specific to browser types
@@ -216,6 +252,22 @@ const context = await chromium.launchPersistentContext(userDataDir, { headless:
 // Execute login steps manually in the browser window
 ```
 
+```java
+import com.microsoft.playwright.*;
+
+public class Example {
+  public static void main(String[] args) {
+    try (Playwright playwright = Playwright.create()) {
+      BrowserType chromium = playwright.chromium();
+      Path userDataDir = Paths.get("/path/to/directory");
+      BrowserContext context = chromium.launchPersistentContext(userDataDir,
+        new BrowserType.LaunchPersistentContextOptions().withHeadless(false));
+      // Execute login steps manually in the browser window
+    }
+  }
+}
+```
+
 ```python async
 import asyncio
 from playwright.async_api import async_playwright
@@ -246,4 +298,4 @@ with sync_playwright() as p:
 
 ### API reference
 - [BrowserContext]
-- [`method: BrowserType.launchPersistentContext`]
+- [`method: BrowserType.launchPersistentContext`]

docs/src/ci.md

@@ -83,6 +83,11 @@ Suggested configuration
    });
    ```
 
+   ```java
+   Browser browser = playwright.chromium().launch(new BrowserType.LaunchOptions()
+     .withArgs(Arrays.asList("--disable-dev-shm-usage")));
+   ```
+
    ```python async
    browser = await playwright.chromium.launch(
       args=['--disable-dev-shm-usage']
@@ -233,6 +238,19 @@ const { chromium } = require('playwright');
 const browser = await chromium.launch({ chromiumSandbox: false });
 ```
 
+```java
+import com.microsoft.playwright.*;
+
+public class Example {
+  public static void main(String[] args) {
+    try (Playwright playwright = Playwright.create()) {
+      BrowserType chromium = playwright.chromium();
+      Browser browser = chromium.launch(new BrowserType.LaunchOptions().withChromiumSandbox(false));
+    }
+  }
+}
+```
+
 ```python async
 browser = await playwright.chromium.launch(chromiumSandbox=False)
 ```
@@ -319,6 +337,20 @@ const { chromium } = require('playwright');
 const browser = await chromium.launch({ headless: false });
 ```
 
+```java
+// Works across chromium, firefox and webkit
+import com.microsoft.playwright.*;
+
+public class Example {
+  public static void main(String[] args) {
+    try (Playwright playwright = Playwright.create()) {
+      BrowserType chromium = playwright.chromium();
+      Browser browser = chromium.launch(new BrowserType.LaunchOptions().withHeadless(false));
+    }
+  }
+}
+```
+
 ```python async
 import asyncio
 from playwright.async_api import async_playwright

docs/src/cli.md

@@ -91,6 +91,27 @@ const { chromium } = require('playwright');
 })();
 ```
 
+```java
+// FIXME
+import com.microsoft.playwright.*;
+
+public class Example {
+  public static void main(String[] args) {
+    try (Playwright playwright = Playwright.create()) {
+      BrowserType chromium = playwright.chromium();
+      // Make sure to run headed.
+      Browser browser = chromium.launch(new BrowserType.LaunchOptions().withHeadless(false));
+      // Setup context however you like.
+      BrowserContext context = browser.newContext(/* pass any options */);
+      context.route("**/*", route -> route.resume());
+      // Pause the page, and start recording manually.
+      Page page = context.newPage();
+      page.pause();
+    }
+  }
+}
+```
+
 ```python async
 import asyncio
 from playwright.async_api import async_playwright