String.indexOf can be replaced with String.contains

Change-Id: Ia3ff4eebc3799a8c1b8f6bbcddd200d08e1d966b
Signed-off-by: Carsten Hammer <carsten.hammer@t-online.de>
diff --git a/org.eclipse.debug.examples.ui/src/org/eclipse/debug/examples/ui/pda/breakpoints/PDABreakpointAdapter.java b/org.eclipse.debug.examples.ui/src/org/eclipse/debug/examples/ui/pda/breakpoints/PDABreakpointAdapter.java
index 1b5deea..fc61762 100644
--- a/org.eclipse.debug.examples.ui/src/org/eclipse/debug/examples/ui/pda/breakpoints/PDABreakpointAdapter.java
+++ b/org.eclipse.debug.examples.ui/src/org/eclipse/debug/examples/ui/pda/breakpoints/PDABreakpointAdapter.java
@@ -191,7 +191,7 @@
                 String lineText = document.get(information.getOffset(), information.getLength());
 				if (lineText.startsWith(":")) { //$NON-NLS-1$
                     String label = lineText.substring(1);
-					if (source.indexOf("call " + label) >= 0) { //$NON-NLS-1$
+					if (source.contains("call " + label)) { //$NON-NLS-1$
                         return label;
                     }
                 }
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/AddMemoryRenderingContextAction.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/AddMemoryRenderingContextAction.java
index e347d88..d517e68 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/AddMemoryRenderingContextAction.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/AddMemoryRenderingContextAction.java
@@ -57,7 +57,7 @@
 		IMemoryRenderingContainer selectedPane = null;
 
 		for (int i = 0; i < viewPanes.length; i++) {
-			if (actionId.indexOf(viewPanes[i].getId()) != -1) {
+			if (actionId.contains(viewPanes[i].getId())) {
 				selectedPane = viewPanes[i];
 				break;
 			}
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/RemoveRenderingContextAction.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/RemoveRenderingContextAction.java
index 92d2653..d671dc8 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/RemoveRenderingContextAction.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/RemoveRenderingContextAction.java
@@ -70,7 +70,7 @@
 		IMemoryRenderingContainer selectedPane = null;
 
 		for (int i = 0; i < viewPanes.length; i++) {
-			if (actionId.indexOf(viewPanes[i].getId()) != -1) {
+			if (actionId.contains(viewPanes[i].getId())) {
 				selectedPane = viewPanes[i];
 				break;
 			}
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/EnvironmentTab.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/EnvironmentTab.java
index ab12e95..e101bd4 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/EnvironmentTab.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/EnvironmentTab.java
@@ -557,7 +557,7 @@
 		String value= var.getValue();
 		MultipleInputDialog dialog= new MultipleInputDialog(getShell(), LaunchConfigurationsMessages.EnvironmentTab_11);
 		dialog.addTextField(NAME_LABEL, originalName, false);
-		if(value != null && value.indexOf(System.getProperty("line.separator")) > -1) { //$NON-NLS-1$
+		if(value != null && value.contains(System.getProperty("line.separator"))) { //$NON-NLS-1$
 			dialog.addMultilinedVariablesField(VALUE_LABEL, value, true);
 		}
 		else {
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/WorkingDirectoryBlock.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/WorkingDirectoryBlock.java
index 0ec29a5..7e66963 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/WorkingDirectoryBlock.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/WorkingDirectoryBlock.java
@@ -330,7 +330,7 @@
 		setMessage(null);
 		// if variables are present, we cannot resolve the directory
 		String workingDirPath = getWorkingDirectoryText();
-		if (workingDirPath.indexOf("${") >= 0) { //$NON-NLS-1$
+		if (workingDirPath.contains("${")) { //$NON-NLS-1$
 			IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
 			try {
 				manager.validateStringVariables(workingDirPath);